William Bradley-King (born December 22, 1997) is an American professional football linebacker for the San Francisco 49ers of the National Football League (NFL). He played college football for the Arkansas State Red Wolves and Baylor Bears and was selected by Washington Commanders in the seventh round of the 2021 NFL draft.
Bradley-King was drafted by the Washington Football Team in the seventh round (240th overall) of the 2021 NFL draft. He signed his four-year rookie contract on May 13, 2021. Bradley-King was released on August 31, 2021, but re-signed to the practice squad the following day.
On December 13, 2021, he was placed on the COVID-19 reserve list and was activated on December 22. Bradley-King signed to the active roster on January 8, 2022.
On August 30, 2022, Bradley-King was waived by the Commanders and signed to the practice squad the next day. He signed a reserve/future contract on January 9, 2023.
On August 29, 2023, Bradley-King was waived by the Commanders and re-signed to the practice squad. He was released on September 6, 2023, but re-signed to the active roster two days later. He was waived on September 11, but re-signed with the practice squad three days later. On October 14, 2023, he was released from the practice squad.
On October 18, 2023, the New England Patriots signed Bradley-King to their practice squad. He signed a reserve/future contract with New England on January 8, 2024. Bradley-King was waived by the Patriots on August 26.
On August 30, 2024, Bradley-King was signed to the Miami Dolphins' practice squad. He signed a reserve/future contract with Miami on January 7, 2025. On May 22, Bradley-King was waived by the Dolphins.
On August 14, 2025, Bradley-King signed with the San Francisco 49ers. He was waived on August 26 as part of final roster cuts and re-signed to the practice squad the next day. Bradley-King was released by San Francisco on August 29. On September 24, Bradley-King signed with the 49ers' practice squad. On January 20, 2026, he signed a reserve/futures contract with San Francisco.