OOB

OOB may refer to:


 * Oob (Dragon Ball), a fictional character in Dragon Ball
 * off our backs, US feminist periodical 1970–2008
 * Order of battle, a listing of military units
 * Out-of-bag error, a method of measuring prediction error
 * Out-of-band management, using a dedicated management channel in computer networking
 * Out of bounds, a state of violating boundary rules in sports, gaming (specifically speedrunning), or computer science.
 * ÖoB, a Swedish discount chain
 * Old Orchard Beach, a seaside resort town in Maine