COSE may refer to:

• Common Open Software Environment, a 1993 Unix initiative
• Council of Smaller Enterprises, a business advocacy organization in Northeast Ohio
• Carbonyl selenide (COSe)

• Solomon Ganzfried
• Solomon Glacier
• Solomon Glass
• Solomon Globus
• Solomon G. Mikhlin
• Solomon Goldstein
• Solomon Gotthilf
• Solomon Grigor'evich Mikhlin
• Solomon Grimes
• Solomon grundy
• Solomon Grundy (song)
• Solomon G. Seisay
• Solomon Guggenheim
• Solomon Guggenheim Museum
• Solomon gundy
• Solomon Gundy
• Solomon Halberstam (disambiguation)
• Solomon Hart, Esq.
• Solomon Hart, Esq. R.A.
• Solomon Hawala
• Solomon H. Bethea
• Solomon Heydenfeldt
• Solomon Hicks Bethea
• Solomon Hill
• Solomon Hills