Samuel Endicott Peabody (April 19, 1825 – October 31, 1909) was an American merchant and banker who was a partner in the London banking firm of J.S.

[2] After Harvard, he organized the merchant firm of Curtis & Peabody, with offices on India Wharf.

During the first year of he was a partner, the firm "scored one of its greatest successes by the placing of the French loan.

The Franco-Prussian War had just ended, France had been defeated, and the Rothschilds, the Barings and other firms, apprehensive of her future, refused to identify themselves with it.

The loan was subscribed three or four times over, and the speedy recuperation of the republics helped to give its fiscal agent a reputation and standing which, with J. Pierpont Morgan as chief partner, the house conspicuously maintain[ed].