The Young Actors Summer Institute is an arts enrichment summer programs in New England. Held annually since 2005 at the Tony Award-winning Trinity Repertory Company, in Providence, Rhode Island, YASI is taught by the theater's resident acting company and education staff. Students are able to choose from a variety of different classes, including playwriting, painting and drawing, improvisation, Shakespeare, film and more.

Yasi may refer to:

Cyclones

• 1996's Cyclone Yasi
• 2011's Cyclone Yasi - Caused significant damage to Queensland, Australia in 2011