Cmax

Cmax may refer to:
 * Customatix, a footwear company
 * C Max, a maximum security prison in South Africa
 * Ford C-MAX, a model of car
 * Cmax (pharmacology), the maximum concentration of a drug in the body after dosing.
 * CMAX, a crisis indicator designed by Patel and Sarkar
 * CMAX, a bus rapid transit service in Columbus, Ohio, operated by Central Ohio Transit Authority