Nína Sæmundsson or Nina Saemundsson, born as Jónína Sæmundsdóttir (22 August 1892 – 29 January 1965) was an Icelandic artist, known for her sculptures and paintings.

[2][4] Saemundsson attended the Royal Danish Academy of Fine Arts in Charlottenborg Palace, studying under artists Julius Schultz and Einar Ultzon-Frank.

[5] Nína was engaged to footballer Gunnar Thorsteinsson, the younger brother of the artist Muggur, from 1918 until his death from pulmonary tuberculosis in May 1921.

[5] Actress Hedy Lamarr posed for a bust sculpture by Sæmundsson, which was displayed at the 1939 New York World's Fair with the Swedish American Art Society of the West and it won a first place award.

[9] Sæmundsson worked as a set decorator building sculptures for the Albert Lewin film, The Moon and Sixpence (1942).