The OKM Theatre opened in 2015 at Okanagan Mission Secondary School and under the leadership of Ryan Grenier (Artistic Director and Head of Design) and Zach Griffin (Music and Vocals Director for Choir, 3T Vocals, OKM Music Department) The OKM theatre has produced over 30 productions including Broadway Musicals (OKM Triple Threat Theatre Company), Full length plays and plays with music (MissionMainStage Theatre Company),  One Act Plays and Children's Theatre (Grade 9/10 Drama) and the OKM Fringe festival (available to any OKM student to participate in! ) 

Zach Griffin (3T Music and Vocal Director) is well-known in the Okanagan music scene as a saxophonist and music educator. After completing degrees in Jazz Performance (UofT, 2019) and Education (UBC, 2020), Zach began teaching in SD23 and has co-led the OKM Music program since 2021. An active freelancer in jazz, rock, wedding, and DJ groups, Zach also plays saxophone in the bands Rock Steady, The Passion of Amy Winehouse, Lovestruck (SRV Tribute), the Moonlight Jazz Society house band, and the BCIJF Big Band. Zach has performed with the Munro/Patrick Band, the Gary Cable Project, and the Anthony D'Alessandro Quartet (feat. NYC's Benny Benack III). In July of 2025, he started the Zach Griffin Jazz Orchestra (ZGJO), a 17-piece band that performs monthly and features Zach singing and playing saxophone. Zach is an LMS Entertainment on-call musician (for their Elvis and Elton John Tribute bands), and can be heard playing woodwinds on the albums Embargo and TRADBURNER on streaming services. 

 We're very fortunate to welcome Allie Sieben (Dance Director/Choreographer) to the OKM 3T Company! An alumni of 3T, Allie brings years of dance experience and choreography experience to OKM. As a working professional and Artistic Associate with Pixie and Dot YTC in Kelowna and with various theatre companies across Canada - we're thrilled that Allie has made time to support 3T with her talent!

Mr. Cyril Augustin (OKM English Department) has been our Head Carpenter and Co-Designer for many years. His creative eye, ability to engineer and fabricate and generally make magic is essential in creating the many worlds our performers get to play in!