Dier

Dier or DIER may refer to:


 * People
 * Brett Dier (born 1990), Canadian actor
 * Dirk Dier (born 1972), German tennis player
 * Eric Dier (born 1994), English footballer
 * Richard A. Dier (1914–1972), American judge
 * Tobias Dier (born 1976), German golfer


 * Other
 * Department of Infrastructure, Energy and Resources, a former department of the Tasmanian government
 * Wakker Dier, Dutch animal welfare organisation
 * Department for Industrial & Employment Relations of Malta