In printing, galley proofs are preliminary versions of publications, usually uncut and unbound. They will then be subject to proofreading to correct errors: in some cases where the original version is produced in manuscript, copyediting will also start on galley proofs.

Because they are available early, galley proofs can also be provided to reviewers.

Galley proofs are so named because in the days of hand-set type, the printer would set the page into "galleys": metal frames into which the type was laid and tightened into place. These would be used to print a limited number of copies for editing mark-up. The printer would then receive the edits, re-arrange the type, and print the final version.