| Steve Brennan | |
| Fullname: | Stephen Edward Brennan |
| Birth Place: | Derry, Northern Ireland |
| Hometown: | Knodishall, Suffolk, England |
| Since: | 1971 |
| Darts: | 22g Tungsten |
| Laterality: | Right-handed |
| Music: | "Sweet Caroline" by Neil Diamond |
| Bdo: | 1980–1986 |
| Bdo World: | Quarter Finals: 1982 |
| World Masters: | Quarter Finals: 1980, 1983, 1984 |
| Tournament: | New Zealand Open |
| Resultyears: | 1981 |
Stephen Edward Brennan (born 2 February 1951) is a Northern Irish former professional darts player who competed in the 1980s. He was a civil engineer from Leiston and began playing county darts for Suffolk in 1979–1980. He was eligible to play for Northern Ireland because his father was born in Derry.
He made his Embassy World Darts Championship debut in 1982 and caused one of the great upsets in darts history by beating defending champion Eric Bristow in the first round. He also knocked out Dave Whitcombe in the second round before losing 0–4 to Stefan Lord in the quarter-finals.
He appeared at the next four World Championships, but only won two more matches – both first round victories in 1984 and 1985. His last appearance came in 1986 when he lost in the first round to Paul Lim.
After another surprise victory over Bristow in the 1986 MFI World Matchplay tournament,[1] Bristow stated that "he kept losing to wallies".