Leonore Gewessler (German: [lɛoˈnoːʁε ˈgeːvεslɐ]; born 15 September 1977) is an Austrian Green politician serving as Minister for Climate Action, Environment, Energy, Mobility, Innovation and Technology in the Nehammer government.

In this capacity, she championed a popular campaign against the expansion of the ageing Soviet-era[clarification needed] Mochovce Nuclear Power Plant in neighbouring Slovakia, just 100 km from the Austrian border.

[2] In the negotiations on a coalition government following the 2019 Austrian legislative election, Gewessler was a member of the Green Party's delegation.

Despite significant opposition, including a joint statement by Austria's federal states against the law,[3] Gewessler announced her support for it, citing her inability to reconcile letting the opportunity pass without having tried everything.

[6] In 2022, the Austrian government filed a legal challenge to prevent the European Union from including nuclear energy as a category of green investment.