Daniel Bernard Weisweiller (1814 – 13 January 1892) was a German-born Spanish banker of Jewish descent.

[1] According to Niall Ferguson, Weisweiller was "the most important Rothschild agent in the 1830s.

"[2] Weisweiller married Adeline Helbert in 1843.

The couple had one daughter, Adela Weisweiller (1845–1925) who married André Capron [fr],[3] the mayor of Cannes (1902–1928).

This business-related Spanish biographical article is a stub.