No, a resume should not be double spaced. Double-spacing your resume creates too much white space, which makes your resume look empty. You don’t want employers to think that you don’t have enough accomplishments to fill a one page resume. If you’re a recent graduate or still in school, you can include volunteer experience, student government positions, or school projects to make your resume longer.
The bullet points of your resume should always be single spaced. However, you should use double spacing directly underneath your resume header and each section heading to add visual breaks on the page.