The 2023 Sun Bowl was a college football bowl game played on December 29, 2023, at the Sun Bowl in El Paso, Texas. The 90th edition (89th playing) of the annual Sun Bowl game featured Oregon State from the Pac-12 Conference and Notre Dame, an FBS independent. The game began at approximately 12:00 p.m. MST and was aired on CBS. The Sun Bowl was one of the 2023–24 bowl games concluding the 2023 FBS football season. The game was sponsored by Frosted Flakes breakfast cereal, a brand of WK Kellogg Co, and was officially known as the Tony the Tiger Sun Bowl, referring to the cereal's mascot, Tony the Tiger.

The bowl featured the Oregon State Beavers of the Pac-12 Conference and the Notre Dame Fighting Irish, an FBS independent. This was the first Sun Bowl to feature two teams ranked in the AP poll since the 2008 edition.

This was the third meeting between Oregon State and Notre Dame. The Beavers defeated the Fighting Irish in both prior meetings, the 2001 Fiesta Bowl and 2004 Insight Bowl.

The Beavers entered the game with an 8–4 record (5–4 in the Pac-12), tied for fourth place in their conference and ranked 19th in the College Football Playoff rankings.

This was Oregon State's third Sun Bowl; the Beavers previously won the 2006 edition and the aforementioned 2008 edition.

The Fighting Irish entered the game with a 9–3 record, ranked 16th in the College Football Playoff rankings.

This was Notre Dame's second Sun Bowl; the Fighting Irish previously won the 2010 edition.

at Sun Bowl • El Paso, Texas