Harriston Town Hall Theatre & Grey-Wellington Theatre Guild (GWTG) has been providing the community of Minto, Wellington North and the surrounding area with high-calibre live theatre for more than three decades.

Operating from the Harriston Town Hall Theatre, a fully accessible facility, the Guild has a long history of staging both well-known favourites and innovative modern shows. In recent years, such popular musical productions as "Grease" and "Joseph and the Amazing Technicolour Dreamcoat" "Sound of Music" & "Oliver" have played to appreciative theatregoers from across Ontario and beyond.

The Grey-Wellington Theatre Guild stages productions each spring and fall. On many occasions, a children's Christmas production has been added to the schedule, while the guild has also staged special historical productions during the summer months to coincide with major local celebrations.