Martin Klein (born 2 July 1984) is a Czech former professional footballer who played as a centre-back.
On 27 February 2002, he scored a goal in a 2–1 loss against Panathinaikos in the 2001–02 UEFA Champions League, at the age of 17 years and 241 days.
In February 2014, Klein signed for Kazakhstan Premier League side FC Kaisar.
[3] On 30 December 2019, Klein moved to German Landesliga Bayern-Nordost club Kickers Selb.
On 5 June 2009, he made his debut for the Czech Republic national team in a friendly match against Malta, which ended in a 1–0 win.