Grandstreet Theatre (GST) is a theatre in Helena, Montana. It is one of Montana's largest theatres.

Venue: Grandstreet Theatre
Address: 325 North Park
Town: Helena, US

Grandstreet Theatre (GST) is a theatre in Helena, Montana. It is one of Montana's largest theatres. Located in historic downtown Helena, the community theatre presents several plays, musicals, and youth extravaganzas each year. Founded in 1975, "GST" remains a cornerstone for entertainment and education in Montana's capital city. Around 20,000 people attend performances each year. The estimated economic impact of the theatre for the area is $4,000,000 each year. Grandstreet Theatre staff as of 2026 includes Managing Director Danielle Wineman, Artistic Director Jeff Downing, Director of Education Marianne Adams, and Technical Director Paige O'Neill. Carl Darchuck, a Montana native, returned to Helena at the invitation of John Wheeler in May, 1975 to investigate the potential for starting a community theater in Helena, much as he did in Fort Peck, Montana, Tacoma and Port Townsend, Washington. For a year, the theatre was located on Grand Street and Last Chance Gulch, in the ballroom of the historic Placer Hotel. In August, 1976, Grand Street Theatre (still three words then) was invited to move into its current space, a beautiful stone building designed originally as Unitarian church and serving as the Helena Public Library from 1933 until 1976. Since the move, the original avenue of Grand Street was demolished, and Grandstreet became one word. The Theatre has flourished under the guidance of several skilled directors, notably Don McLaughlin, who served for fourteen years, leaving in August, 1993. Later Artistic Directors include Jerry Morrison, Blair Bybee, and Stephen Alexander. Grandstreet Theatre produces seven to ten productions a year, including comedies, dramas and musicals - all the best titles. During the McLaughlin years, Don's wife Janet, began the Grandstreet Theatre School. Now run by Marianne Adams, Theatre School offers school-year classes of a wide variety, and the celebrated Summer Theatre School. Adams also coordinated the Summer Conservatory, bringin