Jason Alan Davidson (born 29 June 1991) is an Australian international association football player who plays as a defender for Ulsan Hyundai.
On 26 January 2009, he signed with Victorian Premier League club Hume City, becoming the youngest starting member in the VPL at the age of 17. After having spent three years in the Japanese football development system. He garnered attention from several A-League clubs after being called up the Australian U-20 squad on 17 March 2009. In June 2009 he left Hume City to pursue several overseas trials.
In September 2009 he signed with Portuguese club, Paços de Ferreira before being voted 2009 Victorian Premier League – Under 21 Player of the Year. Among serious interest from clubs such as European heavyweights VfB Stuttgart and Sporting CP, along with Turkish club Ankaragucu, Davidson also immediately received contract offers from A-League club, Newcastle Jets and another Turkey Super League club in Diyarbakirspor before signing for Paços .