Jan Posthuma
Personal information
Full name	Jan Marcus Posthuma
Born	(1963-06-11) 11 June 1963 (age 61) Dokkum, Friesland, Netherlands
Height	209 cm (6 ft 10 in)
Volleyball information
Position	Middle blocker
Number	6 (1988) 13 (1992) 10 (1996)
National team
1987–1996  Netherlands
Honours Men's volleyball Representing the  Netherlands Olympic Games 1996 Atlanta Team 1992 Barcelona Team World Championship 1994 Greece Team FIVB World Cup 1995 Japan World League 1996 Rotterdam European Championship 1993 Finland 1989 Sweden 1991 Germany

Jan Marcus Posthuma (born 11 June 1963) is a retired volleyball player from the Netherlands, who represented his native country in three consecutive Summer Olympics, starting in 1988 in Seoul.

After having won the silver medal in 1992, Posthuma won the gold medal in Atlanta (1996) with the Dutch Men's Volleyball National Team by defeating Italy in the final (3–2).

• 1992 FIVB World League "Best Digger"

• (in Dutch) Dutch Olympic Committee

• Jan Posthuma at Lega Pallavolo Serie A (in Italian)
• Jan Posthuma at Olympedia
• Volleybox.net profile