| Ahti Kõo | |
| Office: | Mayor of Pärnu |
| Term Start: | 28 April 2005 |
| Term End: | 1 November 2005 |
| Predecessor: | Väino Hallikmägi |
| Birth Date: | 29 March 1952 |
| Birth Place: | Pühajärve, Estonia |
| Party: | Res Publica Party (2002–2007) Reform Party (2007–2010) |
| Alma Mater: | University of Tartu |
Ahti Kõo (born 29 March 1952) is an Estonian lawyer, writer and former politician. He is a member of the which unites the members of Supreme Council of the Republic of Estonia who voted for the restoration of the independence of Estonia.
Kõo graduated from Otepää Secondary School in 1970[1] and from the Faculty of Law at the University of Tartu in 1975. He then worked as a prosecutor (in the years 1976-1990) in Tartu, Jõgeva and Pärnu. Later, he acted as a sworn advocate.
From 1979 to 1990, Kõo was a member of the Communist Party of Estonia. From 1990 to 1992, he was a member of the Supreme Soviet of the Republic of Estonia, where he voted to restore Estonia's independence. From 1993 to 1996 and from 1999 to 2002, he was the Vice-Chairman of Pärnu City Council, later becoming the mayor of Pärnu briefly in 2005.[2] He later was a city council member again from 2007 to 2010. From 2002 to 2007, he was a part of the Res Publica Party, which later became the Fatherland and Res Publica Union Party. From 2007 to 2010, he was a member of the Reform Party.