Mart Siimann (born 21 September 1946) was the Prime Minister of Estonia from 1997 to 1999, representing the liberal/centrist Estonian Coalition Party.
He was the president of the Estonian Olympic Committee from 2001 to 2012.Born at Kilingi-Nõmme, Siimann studied at the University of Tartu from 1965 to 1971.
In 1971, he graduated as a philologist-psychologist.
From 1989 to 1992, he was the director of the Estonian Television and from 1992 to 1995, Managing Director of Advertising Television Co.
He was a member of the Estonian Parliament from 1995 to 1997 and from 1999 to 2003, elected as a Coalition Party member (but since 2001 served as the chairman of the centre-left/social democratic association "Mõistuse ja Südamega" ("With Reason and Heart")).