Gregory Steward competed in canoeing at the 1988 and 1992 Olympics. He was runner-up at the US nationals in the C-1 500 and C-1 1,000 in 1986, and won silver medals in the same two events at the 1988 US Olympic Trials. In 1989 he won a silver in the C-1 500 and a bronze in the C-1 1,000 at the US Nationals. Steward competed at the World Championships in 1986 and 1987. He started in canoeing in 1973 as a marathon canoeist. During his career he worked part-time as a mail carrier and a plumber.
|1988 Summer||26||Seoul||Canoeing||Men's Canadian Doubles, 1,000 metres||United States||USA||4 h1 r2/4|
|1992 Summer||30||Barcelona||Canoeing||Men's Canadian Doubles, 1,000 metres||United States||USA||AC h2 r2/3|
|1988 Summer||26||Seoul||Canoeing||United States||USA||Ronald Urick||RepÃªchage||1988-09-27|
|1988 Summer||26||Seoul||Canoeing||United States||USA||Ronald Urick||Round One||Heat One||1988-09-27|
|1992 Summer||30||Barcelona||Canoeing||United States||USA||Wyatt Jones||Semi-Finals||Heat Two||1992-08-06|
|1992 Summer||30||Barcelona||Canoeing||United States||USA||Wyatt Jones||Round One||Heat Two||1992-08-04|