John Rhea Barton Willing (December 21, 1864 – September 2, 1913) was an American music enthusiast and violin collector who was prominent in New York and Philadelphia society during the Gilded Age.

[2] His siblings included Susan Ridgway Willing, who married Francis C. Lawrance Jr.; Edward Shippen Willing Jr. who died at age six; and Ava Lowle Willing who was married to John Jacob Astor IV and Thomas Lister, 4th Baron Ribblesdale.

[9][10] His paternal great-grandfather was Thomas Willing, mayor of Philadelphia and the first president of First Bank of the United States.

[1] He collected art, including a renowned copy of the Henry Inman portrait of John Marshall, Chief Justice of the United States.

[19][22][23] In his will, he left a Stradivarius violin to his longtime friend, A. Lanfear Norrie, who predeceased him.