Mark Timlin (born 17 November 1994) is an Irish former professional footballer that played for League of Ireland clubs Derry City, St Patrick's Athletic and Finn Harps.

After 3 seasons with Ipswich reserves scoring 10 goals in 35 games, Timlin's contract came to an end and he made the move back home and went on trial with League of Ireland side Derry City.

After his impressive from for Derry, Timlin attracted many clubs, including rivals St Patrick's Athletic and Shamrock Rovers.

[8] Timlin's first goal for the Saints came in a 3–0 win over Dublin rivals Bohemians when he headed in an Ian Bermingham cross to open the scoring after 5 minutes at Richmond Park.

[10] He also appeared in all four of the Saints UEFA Europa League games as they beat Luxembourg side Jeunesse Esch[11][12] before being knocked out by Dinamo Minsk of Belarus.