Nathan Mayer, Freiherr von Rothschild (16 September 1777 – 28 July 1836), known as Nathan Mayer Rothschild, is a British banker and financier and one of five sons of the second-generation of the Rothschild banking dynasty.

He was born in Frankfurt am Main, the fourth child of Mayer Amschel Rothschild (1744–1812) and Gutle Schnapper (1753–1849).