Sir (disambiguation)

• Jaroslav Šír
• József Sir
• Queen (Nicki Minaj album)
• SIR model
• Saskatchewan International Raceway
• Secondary image registration
• Security Industry Registry
• Sedat Sir
• Sequential Importance Resampling
• Serial Infrared
• Short interest ratio
• Siantar railway station
• Sigma Iota Rho
• Signal-to-interference ratio
• Siir (disambiguation)
• Silent information regulator protein
• Singapore Infantry Regiment
• Sion Airport
• Sir
• Sir (1993 film)
• Sir (2018 film)
• Sir (2024 film)
• Sir (2025 film)
• Sir (A Series of Unfortunate Events)
• Sir (album)
• Sir (singer)
• Sir Creek
• Sir, Iran
• Sir, Jenin
• Sir, Razavi Khorasan
• Sir, Tulkarm
• Sir, West Azerbaijan
• Sirene
• Society of Interventional Radiology
• Sons In Retirement
• South Indian Railway
• Special Intensive Revision
• Staten Island Railway
• Statutory Invention Registration
• Supplemental inflatable restraint
• Surrey Iron Railway
• Sır Dam