Geffert may refer to: 12747 Michageffert, a main-belt asteroid, named after Michael Geffert 17855 Geffert, a main-belt asteroid, named after Martin Geffert Johannes Geffert (born 1951), a German organist Martin Geffert (1922–2015) a German amateur astronomer Michael Geffert (born 1953), a German astronomer and discoverer of minor planets Viliam Geffert (born 1955), a Slovak theoretical computer scientist