Daniel Thomas was a small scale piano maker in New York City during the early to middle 19th Century. Thomas started out as a cabinet maker in about 1815, and started building pianos in about 1820. His first workshop is listed at 15 Barclay Street, which he shared with the piano maker Langford Ryder. Daniel Thomas built primarily square grand pianos, and possibly melodeons. Thomas enjoyed modest success for several decades, going out of business sometime just before the Civil War era.