Ulla-Britt Wieslander (later Rosberg, born 10 June 1942) is a retired Swedish sprinter.
She competed at the 1960, 1964 and 1968 Summer Olympics in the 100 m, 200 m and 80 m hurdles (five events in total), but failed to reach the final in any contest.
Between 1959 and 1966 she won more than 20 national titles in the 80 m hurdles, 100 m, 200 m, 4 × 100 m and 4 × 200 m events.