Ralph Steingruber (born 15 January 1967) is a retired Swiss footballer who played as defender or midfielder in the 1990s and 2000s. Steingruber played his youth football by BSC Old Boys and advanced to their first team in 1991. After playing two seasons with them he moved on. In his two seasons with the club, Steingruber played a total of 77 games for Basel scoring a total of seven goals. 43 of these games were in the Nationalliga A, eight in the Swiss Cup and 26 were friendly games. He scored two goals in the domestic league, one in the cup and the other four were scored during the test games.