The third season of the American television series Haven premiered September 21, 2012 and consisted a total of 13 episodes.

On October 12, 2011, Syfy picked up Haven for a thirteen-episode third season expected to air in 2012,[1] with production beginning on April 18.

[16][17] Dorian Missick and Kate Kelton also joined the cast in recurring roles.

[18] Season 3's guest stars include Iain Glen[19] along with Nolan North and Claudia Black, who both co-starred with Emily Rose in the Uncharted videogame series,[20] and Laura Vandervoort.

[21] The season's penultimate episode "Reunion", which dealt with a string of murders at Haven High School, and the season finale "Thanks for the Memories" were originally slated to air on December 14 and 21 respectively but Syfy pulled both episodes from the schedule and moved them to January 17, 2013 as a back-to-back season finale with repeats of the Eureka and Warehouse 13 holiday episodes airing in their place due to the Sandy Hook Elementary School shooting that occurred on the day "Reunion" was going to air.