Lindegren was born in Luleå, Norrbotten County, the son of a railway engineer. With Gunnar Ekelöf, he belonged to the most prominent exponents of the lyric modernism flourishing in his country, especially from the 1940s. He translated the works of T. S. Eliot, Rainer Maria Rilke, Graham Greene, Saint-John Perse, Dylan Thomas, William Faulkner, Paul Claudel and many others into Swedish.
He took a keen interest in music, opera and the visual arts, and was an accomplished opera librettist at the Royal Swedish Opera, and also an informed and enthusiastic opera critic. Lindegren wrote the libretto for Karl-Birger Blomdahl's space opera Aniara among others. Between 1948 and 1950 he led the literary magazine Prisma, one of the most lavish and broad ever produced in Sweden, aiming to "gauge the state of the arts in the present".
His poetry books include mannen utan väg ("The Man Without a Way", title without capital M; 1942, a breakthrough work of its generation) and Vinteroffer ("Winter Sacrifice", 1954).
- Britannica Book of the Year 1969, covering events of 1968, (published 1969), "Obituaries 1968" article, item on "Lindegren, (J.) Erik", page 574