Stephen Alexander Martin (born 13 April 1959) is a former field hockey player from Northern Ireland who represented both Ireland and Great Britain at international level. Between 1980 and 1991 he made 135 senior appearances for Ireland. He also captained the Ireland team. He represented Ireland at the 1983, 1987 and 1991 EuroHockey Nations Championships and at the 1990 Men's Hockey World Cup. Between 1983 and 1992 Martin also made 94 senior appearances for Great Britain. He represented Great Britain at the 1984, 1988 and 1992 Summer Olympics, winning a bronze medal in 1984 and a gold medal in 1988. In 1994 he was awarded an . In 2001 he was awarded an Honorary Doctorate by Ulster University. In 2011 Martin was inducted into the Irish Hockey Association Hall of Fame. After retiring as a field hockey player, Martin became a sports administrator. Between 1998 and 2005 he served as Deputy Chief Executive of the British Olympic Association and between 2006 and 2018 he served as Chief Executive of the Olympic Council of Ireland. He now runs his own leadership and management consultancy business and is an associate consultant at Lane 4.