Flank

Flank may refer to:
 * Flank (anatomy), part of the abdomen
 * Flank steak, a cut of beef
 * Part of the external anatomy of a horse
 * Flank speed, a nautical term
 * Flank opening, a chess opening
 * A term in Australian rules football
 * The side of a military unit, as in a flanking maneuver
 * Flanking, a sound path in architectural acoustics
 * Flanking region, a region of DNA in directionality
 * Rift flank (synonymous of rift shoulder), mountains belt on the sides of extensional rift basins