Tillman \t(i)-ll-man\ as a boy's name is of Old English origin, and the meaning of Tillman is "one who plows the earth". Occupational name. In agriculture, tilling the soil meant turning and loosening it before it was planted.
Tillman has 2 variant forms: Tilghman and Tilman.
For more information, see also the related name Till.
Baby names that sound like Tillman are Tilmann, Delman and Talmon.