RCSC may refer to:

• Roman Catholic Syrian Christian
• Syro-Malabar Catholic Church
• Red Cliffs Secondary College
• Royal Canadian Sea Cadets
• Royal Charleroi Sporting Club
• Research Council on Structural Connections

• Yunnan Museum
• Yunnan Nationalities University
• Yunnan Nationalities Village
• Yunnanolepidae
• Yunnanolepiformes
• Yunnanosaurus youngi
• Yunnan Plateau subtropical evergreen forests
• Yunnan Province, Republic of China
• Yunnan Railway Museum
• Yunnan Taishan Pardus
• Yunnan under Ming rule
• Yunnan-Vietnam railway
• Yunnan, Yuanjiang
• Yunnan–Burma Railway
• Yunnan–Vietnam railway
• Yun Narae
• Yunnu
• YU-NO: A girl who chants love at the bound of this world
• Yun of Gojoseon
• Yunohamella
• Yunohamella lyrica
• Yunohora-Onsen-guchi Station
• Yun OS
• YunOS
• YU-nostalgia