Around the globe, Cailum (Cailum 
) is an extremely rare male forename.
Dow, Earley, Hailey, Foster, Mc Ardle, Keevney, Roberts, Lawson, Leyshon, Fortuin, Webster, Mitchell, Levendal, Partridge, Whitehead, Higgins, Fitzgerald, Davies, Staats, Choi, Khan, Reay, Hunt, Wolf, Magee, Cherry, Scott, Burke, Keary, Davis, Horan, White, Seeley, Burns, and Plenderleith