Peco (disambiguation)

PECO is a British manufacturer of model railway accessories.

Peco or PECO may also refer to:
 * PECO Energy Company, formerly the Philadelphia Electric Company, now a subsidiary of Exelon
 * Panay Electric Company (PECO), an electric power distribution company in the Philippines
 * peco (unit), the unit of measurement of the dielectric properties of concrete
 * Asim Peco, linguist
 * Pakistan Engineering Company (PECO), an engineering company in Pakistan
 * PECO-InspX, a global manufacturer of Fill Level Monitoring, X-ray Inspection and related industrial systems
 * Photoelectrochemical oxidation, a process by which incident light enables a semiconductor material to promote a catalytic oxidation reaction
 * Peco (model), Japanese model, television personality, and singer