Petras Vaitiekunas (born 26 March 1953) is a Lithuanian diplomat, activist and artist.

Petras Vaitiek┼źnas was a signatory to the Lithuanian declaration of independence in 1990 and a member of the Lithuanian Supreme Council from 1990 to 1992. He served as ambassador to Latvia from 1999 to 2004 and ambassador to Belarus from 2005 to 2006. He was appointed Foreign Minister of Lithuania on 12 July 2006. He also served as an appointed ambassador of Lithuania to Ukraine in 2010-2014.