| Myriam van Rooyen-Steenman | |
| Birth Name: | Maria Hendrika Leonarda Steenman |
| Birth Date: | 1950 4, df=y |
| Birth Place: | Amsterdam, the Netherlands |
| Height: | 1.78m (05.84feet) |
| Weight: | 72kg (159lb) |
| Sport: | Rowing |
| Club: | Nereus, Amsterdam |
| Show-Medals: | yes |
Maria Hendrika Leonarda "Myriam" van Rooyen-Steenman (Steenman, born 17 April 1950) is a retired Dutch rower. She competed at the pre1972 Summer Olympics and the 1976 Summer Olympics in the coxed fours and finished in respectively first and in fifth place. She won a European title in this event in 1973, won a silver medal at the 1974 World Championships and finished fifth at the 1975 World Championships.
Until 1975 she competed under her maiden name Steenman, and since 1976 as van Rooijen-Steenman.