Greyson is a spelling variant of Grayson, an English surname that means "son of the steward" (from the Middle English greyve) or, by folk reading, "son of the gray-haired man". The grey spelling, with its British flavor, gained ground alongside the color-name trend of the 2010s. Greyson rose from number 709 in the United States in 2000 into the top 100 in 2016, peaked at number 77 in 2018 and ranks 149th in 2025.