Haldor Topsøe may refer to:
- Haldor Topsøe (1842–1935), Danish chemist and crystallographer
- Haldor Topsøe (1913–2013), Danish engineer
- Haldor Topsøe (company), Danish catalysis company founded in 1940 by Haldor Topsøe (1913–2013)
This disambiguation page lists articles associated with the title Haldor Topsøe.
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