Sayid Ahmad I was a khan of the Golden Horde from 1427 or 1433 until 1455. Unlike the last five of six khans, Ahmad was not a descendant of Tokhtamysh but Timur-Malik, a cousin of Tokhtamysh.
While he died before the Horde dissolved, historians believe that Sayid Ahmad was responsible for creating the conditions in the khanate which allowed it to happen.