Martin Padar (born 11 April 1979 in Tallinn) is an Estonian judoka, who has competed in the men's half heavyweight (100 kg) and later in the heavyweight (+100 kg) category. A 2009 European champion, he has also competed at two Olympics, the 2008 Beijing Olympics and the 2012 London Olympics.
Politician Ivari Padar is Martin Padar's cousin.