Architect Flemming Lassen was as noted for his furnishings as he was for his buildings, and he created bedroom furniture and other pieces specifically for the inviting interiors he brought to fruition. The Danish modernist is credited by many for his role in introducing his native country to functionalism, which prioritizes practicality over excessive ornamentation in design. Lassen is widely known for his comfortable, plush vintage sofas, lounge chairs and other seating, such as the overstuffed Tired Man armchair and Mingle sofa.
Lassen's mother and father were both painters. In the early 1900s, he and his brother — architect Mogens Lassen — began to attend boarding school where they befriended Arne Jacobsen, with whom Flemming would come to share an affinity for the principles of functionalism. Jacobsen became a leading light of Scandinavian modernism — his celebrated mid-century designs include the Swan chair and the Egg chair — and he and Flemming remained close throughout their lives, maintaining a strong personal relationship as well as a professional bond as like-minded colleagues.
Lassen and Jacobsen exchanged ideas and collaborated — the former shared his friend’s holistic approach to building projects, which is evidenced by Jacobsen’s design for the SAS Royal Hotel in Copenhagen. Jacobsen’s designs for the property encompassed everything from the architecture to interiors and furnishings. Together, Lassen and Jacobsen won an award at the “Architects Building and Housing Exhibition,” which was held at the Forum in Copenhagen in 1929. The duo was recognized for its “House of the Future,” a circular structure fitted with a then-revolutionary automatic garage door opener and windows that rolled up and down with a handle — just as they would in a car. The House of the Future has influenced Danish architecture to this day.
Flemming also often collaborated with his older brother Mogens, designing buildings and furniture alike. Mogens designed all kinds of tables and seating, and worked with the likes of Jacobsen, Finn Juhl and Ole Wanscher on various projects.
Flemming Lassen created the oak-and-sheepskin Tired Man armchair for The Copenhagen Cabinetmakers’ Guild Competition in 1935. Three years later, he designed the Mingle sofa. Both seating pieces are very popular with collectors today.
Find vintage Flemming Lassen furniture on 1stDibs.
Pair of Flemming Lassen Ingeborg Chairs in Oyster Shearling, Asko 1950s
By Asko, Flemming Lassen
Located in Helsinki, FI
A beautiful pair of Ingeborg armchairs by Danish architect Flemming Lassen, produced by Asko in the 1950s and newly upholstered in natural sheepskin in an oyster colour. Curved armre...
Sheepskin, Wood
Pair of Danish Mid Century Ingeborg Armchairs by Flemming Lassen for Asko, 1950s
By Asko, Flemming Lassen
Located in Stockholm, SE
A rare and early Scandinavian mid century modern sculptural armchairs model "Ingeborg" in beech wood and the original wool upholstery designed by Flemming Lassen and produced by Asko...
Fabric, Beech
$7,094 / set
H 29.93 in W 31.5 in D 29.53 in
Pair Of Ilmari Lappalainen Laila Armchairs Upholstered in White, Asko 1950s
By Asko, Ilmari Lappalainen
Located in Helsinki, FI
A pair of elegant armchairs designed by Ilmari Lappalainen and manufactured by Asko Oy in Finland in the 1950s. Apart from the reupholstery the chair bodies are in original and very ...
Fabric, Birch
$2,613 / set
H 31.5 in W 30.71 in D 41.34 in
Pair of Lounge Chairs Pulkka, Ilmari Lappalainen for ASKO, Finland, 1970s
By Asko, Ilmari Lappalainen
Located in Praha, CZ
- Very confortable - Two chairs and one footstool - Marked by label - Rare in set.
Fabric, Wood
Pair of 1950s Danish Armchairs by Frits Henningsen
By Frits Henningsen
Located in London, London
Pair of lounge chairs By Frits Henningsen Newly upholstered in Baluchi Natural fabric by Designers Guild Measure: seat height 42cm. Denmark 1950s.
Fabric, Beech
$40,000
H 31 in W 78 in D 32 in
Mid-Century Danish Brown Shearling Curved Sofa, Attributed to Flemming Lassen
By Flemming Lassen
Located in Chicago, IL
Mid-Century Modern Danish curved sofa, attributed to Flemming Lassen, circa 1940s. Beautiful condition. Newly upholstered in dark brown European shearli...
Wool
$5,457
H 42.92 in W 25.6 in D 32.68 in
Danish Mid Century Wingback Armchair by Frits Henningsen, 1950s
By Frits Henningsen
Located in Praha, CZ
This exceptional Danish mid-century wingback armchair was designed by Frits Henningsen and produced in Denmark during the 1950s. The chair features a sculptural solid wood frame comb...
Fabric, Wood
$22,511
H 29.93 in W 59.85 in D 30.32 in
Flemming Lassen Ingeborg Sofa in Beech & Oyster Sheepskin, Asko 1950s
By Flemming Lassen, Asko
Located in Helsinki, FI
A beautiful sofa by Danish architect Flemming Lassen, produced by Asko in the 1950s and newly upholstered in natural sheepskin in an oyster colour. Its gently curved, buttoned back f...
Sheepskin, Wood
$7,600
H 38.59 in W 38.59 in D 37.8 in
Mid-Century Armchair in the Style of Flemming Lassen, Scandinavia, 1960s
By Flemming Lassen
Located in Antwerp, BE
This Scandinavian modern lounge armchair, inspired by Flemming Lassen, features an extravagant wingback design. Upholstered in luxurious bouclé wool, it offers both comfort and style...
Wool, Wood
Pair of Danish Cabinetmaker 1950s Sheepskin Armchairs
By Hans Hansen
Located in London, England
Hans Hansen & Son - Pair of Armchairs, c1940s A pair of lounge chairs produced in Denmark, between 1940-1950 by cabinetmakers Hans Hansen & Son, based in Odense on the island of Fun...
Sheepskin, Beech
Vintage "Ingeborg" sofa by Flemming Lassen, Denmark, 1940s
By Flemming Lassen, Asko
Located in Östermalm, Stockholms län
Beautiful “Ingeborg” sofa by Flemming Lassen, with curvesome forms. Designed in 1940 and named after his mother, the artist Ingeborg Winding. Upholstered with caramel colored sheepsk...
Lambskin, Birch
Flemming Lassen Settee in Beige Sheepskin, 1940s
By Jacob Kjaer, Flemming Lassen
Located in Copenhagen, DK
Flemming Lassen, settee for master cabinetmaker Jacob Kjaer, Denmark. Tapering legs in mahogany and reupholstered in beige sheepskin. The model was presented at The Copenhagen Cabinetmakers' Guild Exhibition in 1940. A matching pair of Flemming Lassen chairs...
Sheepskin, Mahogany
$4,037 / set
H 33.08 in W 18.9 in D 20.48 in
Flemming Lassen – Rare Pair of Mahogany Chairs with Cane Backs
By Flemming Lassen
Located in Kastrup, DK
Flemming Lassen (Danish, 1902–1984) A rare pair of chairs crafted in Cuban mahogany, featuring French-woven cane backs and seats upholstered in original Niger leather. Designed by F...
Leather, Cane, Mahogany
$28,423 / set
H 29.53 in W 28.75 in D 29.53 in
Pair of Easy Chairs in Ash Legs with Velvet Mohair by Flemming Lassen, 1940's
By Flemming Lassen
Located in Limhamn, Skåne län
Pair of Easy Chairs in Ash Legs with Original Velvet Mohair Fabric by Flemming Lassen, 1940's Additional Information: Material: Ash legs with original velvet mohair fabric Style: Mi...
Ash, Velvet
$12,261
H 31.3 in W 30.71 in D 32.68 in
Pair of Lounge Chairs, Denmark, 1950s, Newly Upholstered in Sheepskin
By Flemming Lassen, Viggo Boesen
Located in Lewes, East Sussex
A super pair of lounge chairs, newly upholstered in grey / brown sheepskin, Denmark, 1950s. Fast shipping worldwide. .
Wood, Sheepskin
Vintage "Ingeborg" sofa by Flemming Lassen, Denmark, 1940s
By Flemming Lassen, Asko
Located in Östermalm, Stockholms län
Beautiful “Ingeborg” sofa by Flemming Lassen, with curvesome forms. Designed in 1940 and named after his mother, the artist Ingeborg Winding. Upholstered with caramel colored sheepsk...
Lambskin, Birch
1940s Danish Flemming Lassen Style Sheepskin Lounge Chair Pair
By Flemming Lassen
Located in Virginia Beach, VA
A pair of lounge chairs dating to 1940s Denmark with brown teddy bear shearling upholstery. Flowing art deco lines with pronounced wood feet up front. Great channel tufting accentuat...
Sheepskin
Flemming Lassen Ingeborg Armchair in Red Velvet, Denmark, 1940s
By Flemming Lassen
Located in Santa Monica, CA
Flemming Lassen Ingeborg easy chair produced by cabinetmaker Jacob Kjaer. Ingeborg design originally presented at The Copenhagen Cabinetmaker...
Upholstery, Velvet, Beech
Lounge In Style Of Flemming Lassen in 100% Wool Faux Shearling
By Flemming Lassen
Located in Culver City, CA
Lounge In Style Of Flemming Lassen in 100% Wool Faux Shearling, Denmark Circa 1940. Generously sized armchair newly upholstered in 100% wool sustainable faux shearling by Maharam. ...
Wool
Sold
H 36 in W 26.5 in D 19.5 in
Rare Danish Design Chair by Flemming Lassen and Arne Jacobsen, circa 1950s
By Flemming Lassen
Located in New York, NY
Rare Danish design chair by Flemming Lassen and Arne Jacobsen, circa 1950s, fruitwood and patinated leather with fine linen upholstery. Retaining ...