Cover may mean:

• Cover (telecommunications), a communications concealment technique
• Cover (philately), generic term for envelope or package
• Cover version, a new version of a previously recorded song
• Cover band, a musical band that plays only covers
• Cover (topology), the mathematical concept of a collection of subsets of a set whose union is the whole set
• Cover (unit) , an area approximately equal to 2698 square metres
• Cover (military), a form of protection in combat