With a passion for math and engineering, Kai Kristiansen has created high-quality wood furniture for decades. Beginning in the 1950s, his coffee tables, chairs, modular shelving and other furnishings were made in the style that would become internationally renowned as Danish modern and boasted clean lines, perfected functionality and exacting craftsmanship.
Born in Denmark, Kristiansen trained in cabinetmaking before studying with Kaare Klint, often cited as the “father of modern Danish design,” at the Royal Danish Academy of Fine Arts in Copenhagen. At just 26 years old, Kristiansen opened his own studio.
Kristiansen had his mid-century breakthrough in 1956 with the Chair #42, which he made with Schou Andersen. Unlike most other chairs at the time, Chair #42’s armrests, with their wealth of radical angles, were connected to the back rather than the front legs. This unconventional flourish makes the backrest appear as though it is floating in midair above the seat.
Kristiansen’s next innovation was a modular wall system in 1957 — three years ahead of Dieter Rams’s more famous 606 Universal Shelving System. Called the Reolsystem Wall Unit, produced by SB Feldballes Møbelfabrik, it’s also known as the FM Wall Unit as FM/Fornem Møbelkunst began producing it in the 1960s.
Kristiansen would go on to work with other leading Danish furniture manufacturers such as Magnus Olesen, Fritz Hansen and Vildbjerg Møbelfabrik, designing everything from chairs and desks to sideboards and cabinets, frequently in rosewood and teak. (The latter was a sought-after wood by Scandinavian modern designers.)
While many of Kristiansen’s timeless designs remain in production, such as his Paper Knife sofa, which was reintroduced by Miyazaki Chair Factory in 2008, and his 1950s Entré collection, which was relaunched with Great Dane Furniture in 2016, others are prized as vintage mid-century pieces.
Today, Kristiansen is still at work on new furniture with an expert eye to thoughtfully functional designs that are made to last.
Find a collection of vintage Kai Kristiansen furniture on 1stDibs.
Pair of Kai Kristiansen Paper Knife Vintage 1950s Rosewood Lounge Chairs
By Magnus Olesen, Kai Kristiansen
Located in London, England
Kai Kristiansen - Paper Knife Chair, 1955 The Model 121 lounge chair is widely considered one of Kai Kristiansen's finest works from a long and celebrated career. The chair, later n...
Leather, Rosewood
Kai Kristiansen Paper Knife Vintage 1950s Rosewood Lounge Chair
By Magnus Olesen, Kai Kristiansen
Located in London, England
Kai Kristiansen - Paper Knife Chair, 1955 The Model 121 lounge chair is widely considered one of Kai Kristiansen's finest works from a long and celebrated career. The chair, later n...
Rosewood, Leather
Danish Mid-Century Modern Teak Armchairs by Kai Kristiansen, 1950
By Kai Kristiansen
Located in West Palm Beach, FL
A vintage Mid-Century modern Danish pair of open armchairs made of hand crafted polished Teakwood, designed by Kai Kristiansen in good condition. The back rest of the Scandinavian low back lounge chairs are spindled and curved with slim, arched armrests, standing on four wooden feet. Newly upholstered in a white-grey cotton fabric. Wear consistent with age and use. Circa 1950, Copenhagen, Denmark...
Fabric, Cotton, Upholstery, Teak
Kai Kristiansen Rosewood Ottoman
By Magnus Olesen, Kai Kristiansen
Located in London, England
Kai Kristiansen Square Ottoman, 1950s Produced by Magnus Olesen, Denmark in solid rosewood. New foam cushion upholstered in pale wool fabric from Kvadrat, Denmark.
Wool, Rosewood
Kai Kristiansen Paper Knife Vintage 1950s Rosewood Lounge Chair
By Magnus Olesen, Kai Kristiansen
Located in London, England
Kai Kristiansen - Paper Knife Chair, 1955 The Model 121 lounge chair is widely considered one of Kai Kristiansen's finest works from a long and celebrated career. The chair, later n...
Wool, Rosewood
Fully Restored Customizable Kai Kristiansen Teak Paper Knife Lounge Chair
By Magnus Olesen, Kai Kristiansen
Located in Knebel, DK
Fully restored Kai Kristiansen teak paper knife lounge chair custom repholstery Model 121 known as the paper knife due to the shape of the armrest was designed by Kai Kristiansen in...
Teak
Kai Kristiansen No 121 Mid Century Paper Knife Teak Lounge Chairs, Pair
By Kai Kristiansen
Located in Franklin Park, IL
Kai Kristiansen No 121 mid century paper knife teak lounge chairs - pair Each chair measures: 23 wide x 27 deep x 28 inches high, with a se...
Upholstery, Teak
Kai Kristiansen Paper Knife Vintage 1950s Rosewood Lounge Chairs
By Magnus Olesen, Kai Kristiansen
Located in London, England
Kai Kristiansen - Paper Knife Lounge Chairs, 1955 A pair of lounge chairs produced by Magnus Olesen in Denmark in the 1950s. The Paper Knife is one of Danish designer Kai Kristianse...
Wool
Paper Knife Armchair by Kai kristiansen for Magnus Olesen, Denmark, 1956
By Kai Kristiansen, Magnus Olesen
Located in Barcelona, ES
Paper Knife armchair designed in 1956 by Kai Kristiansen for Magnus Olesen, Denmark. Teak frame upholstered with new wool fabric from...
Fabric, Teak
$18,542 / set
Kai Kristiansen Paper Knife Lounge Chairs
By Magnus Olesen, Kai Kristiansen
Located in London, England
Kai Kristiansen Pair of 'Paper Knife' model 121 lounge chairs, 1955. Produced by Magnus Olesen, Denmark. New cushions upholstered in Kvadrat Hallingd...
Wool
Pair of Danish Design Paper Knife Lounge Chairs by Kai Kristiansen in Teak Black
By Magnus Olesen, Kai Kristiansen
Located in Ijzendijke, NL
Rare pair of 'Paper Knife' model 121 lounge chairs in teak and black leather (faux) design by Kai Kristiansen for Magnus Olesen in 1955. Gorgeous organic design style sculpted in s...
Faux Leather, Teak
Kai Kristiansen Pair of Rosewood Paper Knife Lounge Chairs, 1950s
By Magnus Olesen, Kai Kristiansen
Located in London, England
Kai Kristiansen Pair of paper knife model lounge chairs, 1955. Produced by Magnus Olesen, Denmark in rosewood. New cushions upholstered in soft grey wool fabric.
Wool, Rosewood
Kai Kristiansen Easy Chairs Model 150 by Christian Jensen Møbelsnedkeri
By Kai Kristiansen
Located in Limhamn, Skåne län
Very rare pair of easy chairs model 150 designed by Kai Kristiansen. Produced by Christian Jensen Møbelsnedkeri in Denmark.
Fabric, Cane, Oak
Kai Kristiansen Paper Knife Vintage 1950s Rosewood Lounge Chairs
By Magnus Olesen, Kai Kristiansen
Located in London, England
Kai Kristiansen - Paper Knife Chair, 1955 The Model 121 lounge chair is widely considered one of Kai Kristiansen's finest works from a long and celebrated career. The chair, later n...
Wool, Rosewood
$1,829Sale Price|20% Off
Easy Chair in Teak and Newly Upholstered Grey Wool Seats by Kai Kristiansen
By Kai Kristiansen
Located in Lejre, DK
This elegant easy chair, crafted from teak and expertly reupholstered in soft grey wool, is a stunning example of mid-century Scandinavian design. Designed by the acclaimed Danish d...
Wool, Teak
$5,640 / set
H 29.25 in W 21 in D 21 in
Set of four Danish Kai Kristiansen model 42 rosewood & leather dining chairs
By Kai Kristiansen
Located in Liberty, NY
Stunning classic set of four mid century 1960's Danish rosewood model 42 dining chairs by Kai Kristiansen. The sculptural rosewood frames display beautiful craftsmanship, with the ba...
Rosewood, Leather
$3,200
H 29.14 in W 27.17 in D 29.93 in
Pair of Mid-Century Scandinavian Teak Lounge Chair Armchair, Denmark, 1960
By Grete Jalk
Located in Saarbruecken, DE
Mid-century teak lounge chair armchair, Denmark 1960. Set of 2 ! New uoholstery in torquois blue.
Fabric, Teak
1950s Bamboo Lounge Chairs
Located in Miami, FL
1950s Bamboo Lounge Chairs with original green finish. Chairs have casters in the front. Chairs need to be recovered, we can help.
Fabric, Bamboo, Wicker, Wood
$10,987 / set
H 30.91 in W 27.17 in D 30.71 in
Vintage Pair Of Cabinetmaker Lounge Chairs, Henning Kjærnulf, Denmark, 1950s
By Henning Kjærnulf
Located in Lewes, East Sussex
Vintage Pair Of Cabinetmaker Lounge Chairs From Denmark, Circa 1950 by Henning Kjærnulf, Denmark. Oak frames in good original condition with a nice even tone and patina. Original f...
Fabric, Oak
$1,866 / item
H 29.14 in W 20.87 in D 21.66 in
Set of Kai Kristiansen Model 42 Dining Chairs, Rosewood, Aniline Leather, 1960s
By Kai Kristiansen, Skovmand and Andersen
Located in Esbjerg, DK
Set of dining chairs produced by Skovman Andersen for the Illum Bolighus department store in Copenhagen. Rosewood frames with seat and back reupholstered with black pure aniline leat...
Leather, Rosewood
$4,550
H 28.75 in W 65.75 in D 32.29 in
1960s Kai Kristiansen Paper Knife 3-Seater Teak Sofa in Leather , Denmark
By Kai Kristiansen
Located in Praha, CZ
- Skelet in very good original condition - Leather pillows in good original conditions - Patinated leather
Leather, Teak
Pair of Lounge Chairs, Italy, 1950s
Located in New York, NY
Pair of low lounge chairs featuring wingback-style backs with distinctly shaped corners. The chairs rest on tapered legs and are upholstered in green velvet. The solid wood frames ha...
Upholstery, Wood
Vintage Danish Mid-Century Modern Solid Teak Armchair, 1950s
Located in Store Heddinge, DK
This exquisite vintage design armchair, crafted during the Art Deco or Mid-Century Modern era, showcases a blend of elegance and structural innovation. The chairs armrest and legs i...
Fabric, Teak
$1,866 / item
H 29.14 in W 20.87 in D 21.66 in
Set of Kai Kristiansen Model 42 Dining Chairs, Rosewood, Aniline Leather, 1960s
By Skovmand and Andersen, Kai Kristiansen
Located in Esbjerg, DK
Set of dining chairs produced by Skovman Andersen for the Illum Bolighus department store in Copenhagen. Rosewood frames with seat and back reupholstered with vintage tan aniline lea...
Leather, Rosewood
Rare Danish Armchair in the Style of Kai Kristiansen
By Arne Hovmand-Olsen, Kai Kristiansen
Located in Vienna, AT
Armchair with solid teak frame, seat and headpiece upholstered. Designed in the early 1970s. In the style of Kai Kristiansen "fire" armchair. Attributed to Hans Hovmand Olsen...
Teak
$2,426Sale Price / set|20% Off
H 29.14 in W 26.38 in D 29.53 in
1960s Kai Kristiansen Model KK161 Pair of Teak Armchairs for Magnus, Denmark
By Kai Kristiansen
Located in Praha, CZ
- sturdy and stable - carefully refurbished - pillows newly upholstered - height of seat 39 cm
Fabric, Teak
$1,919
H 29.53 in W 19.69 in D 18.51 in
Vintage Mid-Century Danish Modern Teak Office Chair Model 31 by Kai Kristiansen
By Kai Kristiansen, Schou Andersen Møbelfabrik
Located in Warszawa, Mazowieckie
The icon of Danish Mid-Century Modern design: the original Model 31 executive chair. It was designed by Kai Kristiansen for the Danish manufacturer Schou Andersen Møbelfabrik in 1957...
Faux Leather, Teak
Kai Kristiansen paper knife rosewood lounge chairs
By Kai Kristiansen
Located in Dublin, IE
Paper knife Lounge chairs 1955 by Kai Kristiansen for Magnus Olesen, Denmark 1950’s in bouclé wool by de ploeg or fabric of your choice. The Paper Knife Lounge Chair (1955) by Kai K...
Wool, Rosewood
Sold
H 27.5 in W 25 in D 28 in
Rare Pair of ‘Paper Knife’ Model 121 Lounge Chairs by Kai Kristiansen for Magnus
By Kai Kristiansen
Located in Las Vegas, NV
Rare Pair of ‘Paper Knife’ Model 121 Lounge Chairs by Kai Kristiansen for Magnus Olesen, Denmark, 1955 An exceptional and hard-to-find pair of Paper Knife model 121 lounge cha...
Upholstery, Teak
Sold
H 27.96 in W 25.2 in D 29.93 in
Kai Kristiansen Paper Knife Lounge Chair Teak & Bouclé Wool Dedar 1960s Easy
By Kai Kristiansen
Located in Basel, BS
Kai Kristiansen ‚Paper Knife‘ lounge chair made in Denmark by Magnus Olesen in the 1960s. Solid teak frame with new cold foam cushions upholstered in a luxurious, irregular wool and...
Wool, Teak
Sold
H 29.14 in W 25.2 in D 28.75 in
Model 121 Paper knife easy chair by Kai Kristiansen for Magnus Olesen, Denmark
By Kai Kristiansen
Located in Ranst, VAN
A ‘Model 121’ easy chair, designed by Kai Kristiansen in 1963 and made by Magnus Olesen in Denmark. Known as the ‘Paper Knife’ chair for its sharp-edged armrests. This easy chair is ...
Teak
1950s Pair of Teak Kai Kristiansen Paper Knife Lounge Chairs
By Magnus Olesen, Kai Kristiansen
Located in Lutz, FL
Mid Century Modern Pair of Danish Teak Model 121 Paper Knife Chairs designed by Kai Kristiansen for Magnus Olesen in 1956. Untagged but well documented design/chairs. Previously res...
Fabric, Teak
Pair of Kai Kristiansen 'Paper Knife' Easychairs 1960s
By Kai Kristiansen
Located in Handewitt, DE
Pair of fine Kai Kristiansen 'Paper Knife' easychairs. Manufactured by Magnus Olesen in beautiful wood. Designed 1963. Original cushions in green fabric. Early production.
Wood
Sold
H 30 in W 25 in D 29 in
Paper Knife' Grey Suede + Teak Chair by Kai Kristiansen for Magnus Olesen
By Kai Kristiansen
Located in Chicago, IL
A Scandinavian Modern ‘Paper Knife’ chair designed by Kai Kristiansen for Magnus Olesen in the 1960s. The rich, chocolate brown teak frame features elegant rounded arms, an angled ba...
Suede, Teak
Pair of Kai Kristiansen Paper Knife Chairs
By Magnus Olesen, Kai Kristiansen, Domus Danica
Located in Cambridge, US
Denmark, ca. 1960s. A rare pair of Model 121 - or Paper Knife - lounge chairs designed by Kai Kristiansen for Magnus Olsen - retailed by Domus Danica. Each features a sculptural solid teak open frame with removable seat and back cushions. Referred to as the “Paper Knife” chair...
Wool, Upholstery, Teak
Pair Kai Kristiansen Leather Troja Armchairs, c1960 / Denmark
By Kai Kristiansen
Located in Buffalo, NY
Classic pair of Kai Kristiansen 'Troja' round chairs from circa 1960. The frame is made from Afromosia African teak wood. The seat has been reupholstered in premium cotton velvet fab...
Fabric, Teak
Sold
H 32 in W 25 in D 33 in
A Pair of Danish Teak 'Paper Knife' Model 121 Lounge Chair by Kai Kristiansen
By Kai Kristiansen
Located in Las Vegas, NV
A rare pair of 'Paper Knife' model 121 lounge chairs in teak and purple wool designed by Kai Kristiansen for Magnus Olesen in 1955. Features: • Gorgeous organic design style sculp...
Wool, Teak
Sold
H 29.53 in W 25.2 in D 29.93 in
Set of 2 Paper Knife Chairs by Kai Kristiansen for Magnus Olesen, Denmark 1950s
By Magnus Olesen, Kai Kristiansen
Located in Ranst, VAN
Set of two vintage Paper Knife chairs designed by Kai Kristiansen for Magnus Olesen in Denmark. These easy chairs are designed in 1955. They have a teak frame and a mixed fabric with...
Fabric, Teak
Sold
H 27.56 in W 25.2 in D 27.56 in
1960s Kai Kristiansen Rosewood Paper knife Chairs For Magnus Olesen, Denmark
By Kai Kristiansen
Located in Shepperton, Surrey
Perhaps Kai Kristiansen’s most celebrated design and a bona fide Danish design classic. A hard to find original pair of ‘Paper knife’ chairs crafted from solid rosewood. One of the ...
Rosewood