Nina Hamnett (14 February 1890 – 16 December 1956) was a Welsh artist and writer, and an expert on sailors' shanties, who became known as the Queen of Bohemia.

Hamnett was born in the small coastal town of Tenby, Pembrokeshire, Wales, eldest of the four children of George Edward Hamnett (born 1864), a captain in the Royal Army Service Corps, and Mary Elizabeth De Blois (1863/4-1947), daughter of Captain William Edwin Archdeacon, a Royal Navy officer and cartographer.

In addition to making close friends with Modigliani, Pablo Picasso, Serge Diaghilev, and Jean Cocteau, she stayed for a while at La Ruche, where many of the leading members of the avant-garde lived at the time.

In Montparnasse in 1914 she also met her future husband, the Norwegian artist Edgar de Bergen, who later changed his name to Roald Kristian to sound less German.

Her reputation soon reached back to London, where for a time, she went to work making or decorating fabrics, clothes, murals, furniture, and rugs at the Omega Workshops, which was directed by Roger Fry, Vanessa Bell, and Duncan Grant.

[6] Her artistic creations were widely exhibited during World War I, including at the Royal Academy in London as well as the Salon d'Automne in Paris.

[7] The notorious occultist Aleister Crowley unsuccessfully sued her and the publisher for libel over allegations of black magic made in her book.

"[9] The American novelist Julius Horwitz (1920–1986) portrayed Nina Hamnett in his 1964 novel about London during World War Two, titled Can I Get There By Candlelight.