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William Altmyer is an American football quarterback who currently plays for the Detroit Lions after going undrafted in the 2026 NFL Draft. Originally from Starkville, Mississippi, he started his college career at Ole Miss as a backup, most notably filling in for an injured starter during the 2022 Sugar Bowl. Seeking a starting role, he transferred to Illinois in late 2022. He had a breakout year in 2024, throwing for 21 touchdowns and only 5 interceptions while leading the Illini to a 9-3 record, a Citrus Bowl victory, and their first 10-win season since 2001. After returning for a final season in 2025 and being named MVP of the Music City Bowl, Altman signed as a free agent with the Detroit Lions, marking the start of his professional career.