Elwes (/ˈɛlwɪs/) is an English surname whose spelling over the years has included Helwish, Helewise, Helwys, Elwaiss, Elwaies and Elway. It may refer to:

Several of these, including Gervase Elwes, were of the Cary-Elwes branch of the family, but chose not to use a hyphenated name.