The Opera Theatre of Saint Louis (OTSL) is a professional opera company located in Saint Louis, Missouri. Founded in 1976, it is known for its commitment to producing new and innovative operas, as well as classic works. The company typically performs during the summer months and features a mix of established and emerging artists. OTSL is recognized for its dedication to community engagement and education. The theatre offers various outreach programs and initiatives aimed at making opera accessible to a broader audience. Its performances take place in the Loretto-Hilton Center, a venue designed specifically for opera and musical theatre.