Werner Baumann (born 6 October 1962) is a German businessman who was the chief executive officer (CEO) of Bayer from 2016 to May 2023.

Baumann began working for Bayer, the German multinational pharmaceutical and life sciences company, in 1988.

He started his career in the finance department and later worked under Werner Wenning as his assistant in the Spanish business division.

As chief of strategy, Baumann played a key role in the Bayer AG acquisition of Schering in 2006.

[7][8] After only four weeks as CEO, Baumann launched a US$62 billion all cash takeover bid for Monsanto, an American agricultural, seed, and agrochemical company.