Robin Williams' Best Supporting Actor Oscar win for ‘Good Will Hunting’ (1997), excerpted from the 70th Academy Awards ceremony, honoring the best in film for 1997, held on March 23, 1998, at the Shrine Auditorium in Los Angeles. Actor Billy Crystal hosted the show for the sixth time. He first presided over the 62nd ceremony held in 1990, and he had hosted the previous year's gala.
| Name | Type | Role | |
|---|---|---|---|
| Billy Crystal | Host | Himself / Host | |
| Mira Sorvino | Host | Herself / Presenter | |
| Laurie Williams | Guest Star | Herself | |
| Marsha Garces Williams | Guest Star | Herself | |
| Anthony Hopkins | Guest Star | Himself / Best Supporting Actor Nominee | |
| Ben Affleck | Guest Star | Himself | |
| Greg Kinnear | Guest Star | Himself / Best Supporting Actor Nominee | |
| Matt Damon | Guest Star | Himself | |
| Burt Reynolds | Guest Star | Himself / Best Supporting Actor Nominee | |
| Minnie Driver | Guest Star | Herself | |
| Robin Williams | Guest Star | Himself / Best Supporting Actor Winner | |
| Gus Van Sant | Guest Star | Himself | |
| Robert Forster | Guest Star | Himself / Best Supporting Actor Nominee | |
| Louis J. Horvitz | Director | ||
| David Steinberg | Actor | Himself (2019 Introduction) |