Thomas Lejdström (born 31 May 1962) is a former Swedish freestyle and medley swimmer, who competed for the University of California Berkeley.

Lejdstrom attended University of California Berkeley and swam for Hall of Fame Coach Nort Thornton.

[2] In the 1984 Olympics, Lejdström won a bronze medal in 4×100-m freestyle relay along with Swedish teammates Bengt Baron, Mikael Örn and Per Johansson.

Both Bron and Johansson had swum as teammates with Lejdstrom at the University of California Berkeley.

Mat Biondi, on the winning American relay team had also swum under Nort Thornton at the University of California Berkeley.