Knightley ranked #13454 among U.S. baby names in 2024. Since 2009, 135 babies have been named Knightley, peaking in 2021 with 19 births. The 2020s were its biggest decade, with 65 births. Knightley is on the rise, up about 38% over the past five years. Knightley is given to both girls and boys.