|Vice President of the Odelsting|
9 October 1973 – 30 September 1977
|Preceded by||Erland Steenberg|
|Succeeded by||Per Karstensen|
|Vice President of the Lagting|
8 October 1965 – 30 September 1973
|President||Bent Røiseland |
|Preceded by||Einar Hareide|
|Succeeded by||Egil Aarvik|
|Member of the Norwegian Parliament|
1 January 1958 – 30 September 1977
|Born||10 April 1907|
|Died||2 January 1999 (aged 91)|
She was born in Oslo.
She was elected to the Norwegian Parliament from Oslo in 1958, and was re-elected on four occasions. She had previously served in the position of deputy representative during the term 1954–1957, during which she met as a regular representative for Rakel Seweriin and later Einar Gerhardsen who both held positions in the Cabinet.
Lionæs was a member of Oslo city council during the terms 1934–1937 and 1945–1947. She was also a member of the Norwegian Nobel Committee from 1948 to 1968 and its leader from 1968 to 1978. She also served as Vice President of the Lagting from 1965 to 1973 and of the Odelsting from 1973 to 1977.
- Gruber, Helmut (1998). Women and Socialism, Socialism and Women: Europe Between the Two World Wars. Berghahn Books. p. 466.