CSFR refers to:

• Cross-site request forgery, a web security issue
• Czech and Slovak Federative Republic (Czech and Slovak: ČSFR), a European country from 1990–1992

• Mary Tsoni
• Mary T. S. Schaeffer
• Mary T. S. Schaffer Warren
• Mary T. S. Schäffer
• Mary T. S. Schäffer Warren
• Mary Tuck
• Mary Tucker Thorp
• Mary Tudor (1920 film)
• Mary Tudor (film)
• Mary Tudor (play)
• Mary Turcke
• Mary Turner
• Mary Turner (businesswoman)
• Mary Turner (trade unionist)
• Mary Twala
• Mary T. Washington
• Mary T Washington
• Mary T. Washington Wylie
• Mary T Washington Wylie
• Mary Two-Axe Earley
• Mary T. Wojtyla
• Mary Tyler Moore filmography and awards
• Mary Underwood
• Mary Upjohn
• Mary Upjohn Light