Yaroslav Petrovych Mendus (born 1 January 1960; in Variazh, Lviv Oblast), is a Ukrainian politician.

Yaroslav Mendus graduated from Lviv University in 1981, receiving a Diploma with Honours in History.

He finished at the Kyiv Institute of Political Science and Social Administration in 1988 and defended his PhD thesis in History in 1999.

Yaroslav Mendus worked in the Administration of the first President of Ukraine, Leonid Kravchuk.

He then worked as Advisor to Oleksandr Moroz (Chairman of the Verkhovna Rada); he was an MP in the 5th Assembly of the Verkhovna Rada; and later worked as Political Advisor to Member of the European Parliament, Marek Siwiec; then as Political Advisor to the Vice-Chair of the Committee on Foreign Affairs in the European Parliament, Ioan Mircea Pascu.