Sir (disambiguation)

• Contrast-detection autofocus
• Infrared Data Association
• Jaroslav Šír
• József Sir
• SIR model
• SIR proteins
• Saskatchewan International Raceway
• Security Industry Registry
• Sedat Sir
• Sequential Importance Resampling
• Short interest ratio
• Sigma Iota Rho
• Signal-to-interference ratio
• Singapore Infantry Regiment
• Sion Airport
• Sir
• Sir (2018 film)
• Sir (A Series of Unfortunate Events)
• Sir (album)
• Sir (film)
• Sir (singer)
• Sir Creek
• Sir, Iran
• Sir, Jenin
• Sir, Razavi Khorasan
• Sir, Tulkarm
• Sir, West Azerbaijan
• Sirene
• Society of Interventional Radiology
• Sons In Retirement (SIR)
• Staten Island Railway
• Statutory Invention Registration
• Surrey Iron Railway
• Sır Dam
• airbag