Simpson (Sammy) Clairmonte Guillen (24 September 1924–1 March 2013. Born in Port of Spain, Trinidad and Tobago, was one of the few men to have played Test cricket for two countries. He played five Tests for the West Indies and three for New Zealand in the 1950s, one of which was the New Zealand team's first victory, over the West Indies.

Guillen held the further rare distinction of also playing in the final of New Zealand's premier association football competition, the Chatham Cup, gaining a runners-up medal for Western AFC in 1954. Unsurprisingly for a wicket-keeper, his position in the Western side was goalkeeper.

Guillen came from a family of cricketers which include: Victor Guillen (Simpson's father, a Test umpire in the West Indies), Noel Guillen (Simpson's brother, whom the Queen's Park Oval's outdoor practice nets are named after), Jeffrey Guillen (a well-known real estate mogul who played cricket competitively throughout his teens and well into his 30's; Noel's son), Charles Guillen (a former player who played a major factor in the coaching of West Indies all-rounder Dwayne Bravo) and Justin Guillen, an up and coming all-rounder who seems destined to follow his Great Uncle Simpson's footsteps. His grandson Logan van Beek plays for the Canterbury Wizards in cricket and for the Christchurch Cougars in the NBL.

Simpson resided in Christchurch, New Zealand, with his wife Val Guillen, a former wicketkeeper for the province of Canterbury women's team. On the death of Colin Snedden on 24 April 2011, Guillen became the oldest surviving New Zealand Test cricketer (he was also the second oldest to represent West Indies). He died 1 March 2013 in Christchurch, New Zealand.