CTCP

CTCP may refer to:


 * California Tobacco Control Program, a branch in the California Department of Public Health (CDPH)
 * Client-to-client protocol, a type of communication between Internet Relay Chat (IRC) clients
 * Compound TCP, a Microsoft algorithm included in Windows Vista
 * Composite toe and composite plate, a type of safety footwear
 * Công ty cổ phần, a limited company in Vietnamese
 * SCNU Couse Teaching