David Nelson Farr is an American business executive. He was the chairman and CEO of Emerson Electric Company, a Fortune 500 company. Farr has worked at the company since 1981 and retired as CEO on Feb 5, 2021. He is married to Lelia Far, with whom he has two children, and is a resident of Ladue, Missouri.

Emerson Electric Co. is an American multinational corporation headquartered in Ferguson, Missouri. The Fortune 500 company manufactures products and provides engineering services for industrial, commercial, and consumer markets. Emerson has approximately 86,700 employees and 170 manufacturing locations.