McKinley Belcher III is an American actor and writer, known for his breakout role as Detective Michael Ledroit in Netflix's Eric, for which he was nominated for a 2025 BAFTA TV Award in Supporting Actor. He also starred in the Netflix limited series Zero Day opposite Robert De Niro and Jesse Plemons, as Samuel Diggs in the PBS television series Mercy Street, Anthony Carter in the Fox genre drama The Passage, and as Agent Trevor Evans in Netflix crime thriller Ozark.