In the French origin, Hewitt means "Hewitt \he-witt, hewi-tt\ as a boy's name is a variant of Hewett (Old French). See for meaning of Hewitt.
The baby name Hewitt sounds like Hewet, Heath, Hyatt, Hiatt and Hayatt. Other similar baby names are Hewlitt, DeWitt, Heriot, Hewlett and Hewie."
In the German origin, Hewitt means "Little Hugh"