General Discussion

but already holds one from 2020:

Medical Education: Jair Bolsonaro of Brazil, Boris Johnson of the United Kingdom, Narendra Modi of India, Andrés Manuel López Obrador of Mexico, Alexander Lukashenko of Belarus, Donald Trump of the United States, Recep Tayyip Erdoğan of Turkey, Vladimir Putin of Russia, and Gurbanguly Berdimuhamedow of Turkmenistan, for using the COVID-19 viral pandemic to teach the world that politicians can have a more immediate effect on life and death than scientists and doctors can. The announcement noted that this is the second time Lukashenko won the prize (the first time was in 2013).

https://en.wikipedia.org/wiki/List_of_Ig_Nobel_Prize_winners]

The 2025 Peace Prize Winner (awarded 18 Sep 2025):

Peace: Fritz Renner, Inge Kersbergen, Matt Field, and Jessica Werthmann, for "showing that drinking alcohol sometimes improves a person's ability to speak in a foreign language".

But also we can't rule out that he may have been involved in this 2025 Ig-Nobel-winning study:

Psychology: Marcin Zajenkowski and Gilles Gignac, for "investigating what happens when you tell narcissists — or anyone else — that they are intelligent"