John M. Atwood (1818 - c. 1880) was an American engraver based in Philadelphia and New York City during the middle part of the 19th century. Atwood was born in Washington D.C. Little is known of Atwood's life but most of his work was completed in conjunction with the publishing firms of Horace Thayer and J. H. Colton. A review of Atwood's work suggests that he was a highly accomplished, stylistically distinct, and detail oriented engraver. Colton seems to have turned to Atwood to engrave some of his most important as well as decorative maps. His most influential map is most likely the 1856 De. Cordova pocket map of Texas, however, he also engraved the Colton's well known and highly decorative Thirty Three Miles Around New York and Colton's important 1849 Map of the United States.