Girth may refer to:
Mathematics Girth (functional analysis), the length of the shortest centrally symmetric simple closed curve on the unit sphere of a Banach space Girth (geometry), the perimeter of a parallel projection of a shape Girth (graph theory), the length of a shortest cycle contained in a graph Matroid girth, the size of the smallest circuit in a matroid
Music and entertainment Girth (album), 1997 album by heavy metal band Winters Bane Girth (Pushing Daisies), an episode of the TV show Pushing Daisies Girth (song), the former name of the Guns N' Roses song "Coma"
Other Girth (tack), a piece of equipment used to keep a saddle in place on a horse Girth (tree), measurement of the circumference of a tree trunk above its base