Clancy died October 1, 2013, after a brief illness at Johns Hopkins Hospital, near his Baltimore home. No cause of death was released. Clancy is survived by his wife, Alexandra; their daughter, Alexis; and four children from a previous marriage to Wanda King: Michelle Bandy, Christine Blocksidge, Kathleen Clancy and Thomas Clancy III. His cause of death was later confirmed to be heart failure.