Friederike (Fredi) Elly Luise Otto (born 29 August 1982) is a climatologist who as of December 2021 works as a Senior Lecturer at the Grantham Institute for Climate Change and the Environment at Imperial College London.

[2] Her research focuses on answering the question whether and to what extent extreme weather conditions change as a result of external climate drivers.

[3] A highly recognized expert in the field of attribution research, she examines the extent to which human-caused climate change as well as vulnerability and exposure are responsible for events such heat waves, droughts and floods.

Together with climate scientist Geert Jan van Oldenborgh she founded the international project World Weather Attribution which she still leads.

Otto also works with lawyers using WWA research to provide expertise for lawsuits aimed at compelling companies or governments to lower their impact on the environment or even seek compensation for victims.