Oliver Geissmann (born 9 December 1978 in Grabs, Switzerland) is a Liechtensteiner sport shooter, specializing in the 10 metre air rifle.

Geissmann has represented his country at the Summer Olympics in 2000, 2004 and 2008.

Geissmann was Liechtenstein's only Olympic representative in 2004, and one of two in 2008.

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