Garrisson \g(ar)-risson, garr(is)-son\ as a boy's name is a variant of Garrison (Middle English), and the meaning of Garrisson is "spear-fortified town; protection, stronghold".

The baby name Garrisson sounds like Garson, Carson, Karson, Gerson, Grayson and Greyson. Other similar baby names are Harrisson, Garretson, Harrison and Morrisson.