Samuel Arnold (10 August 1740 – 22 October 1802) was an English composer and organist.

In 1777, he worked for George Colman the Elder at the Little Theatre, Haymarket.

He also wrote the earliest version of Humpty Dumpty.

Arnold's best-known works include: He is also known for producing the first collected edition of the works of George Frideric Handel between 1787 and 1797, published in 180 parts.

This was the most comprehensive collection of Handel's music prior to the appearance of the Händel-Gesellschaft edition in the next century.