Stephen Douglas Allan (born 18 October 1973) is an Australian professional golfer.

Allan turned professional in 1996 and was a member of the European Tour from 1997 to 2000.

In 1998, his second season in Europe, he won the German Open and finished sixteenth on the Order of Merit, and that remains his most successful year.

*Note: The 2002 Holden Australian Open was shortened to 54 holes due to weather.

PGA Tour playoff record (0–1) CUT = missed the half-way cut "T" = tied NT = No tournament due to COVID-19 pandemic Note: Allan never played in the Masters Tournament or the PGA Championship.