Curtis Gates Lloyd (July 17, 1859 – November 11, 1926) was an American mycologist known for both his research on the gasteroid and polypore fungi, as well as his controversial views on naming conventions in taxonomy.

This was where he met Dr. John King, physician and editor of the American Dispensatory; the close friendship they formed helped to fuel Lloyd's interest in botany.

Soon after, Lloyd directed his attention to the study of the Gasteromycetes, taking field trips and forays to various exotic locales, and collecting more specimens for his growing personal herbarium.

Nor am I deceiving myself into the belief that I will accomplish what I am trying to bring about, the abolition of personal advertisements in mycology.His conservative approach to classification was later criticized by Marinus Anton Donk, who wrote "The terror that Lloyd spread among North American mycologists and abroad by ridiculing everything that reminded him of taxonomic innovation in the systematics of fungi ... has not yet been completely overcome.

"[4] Lloyd spent much of the latter half of his career working on the polypore fungi, of which he amassed an extensive collection later described by Josiah L. Lowe as "undoubtedly the best single source of information on the species of the world.

"[5] In 1926, plagued by failing eyesight, Lloyd was forced to retire from his mycological work, and returned to Crittenden, where he lived until his death from complications of diabetes, on November 6, 1926.