CL-52 or variation, may refer to:
Canadair CL-52 Stratojet, RCAF jet bomber from the 1950s Chlorine 52 (Cl-52; 52Cl), an isotope of chlorine CL52, a type of vacuum tube; see List of vacuum tubes , WWII USN Atlanta-class light cruiser, whose sinking killed the five Sullivan brothers
See also
CL (disambiguation)