Sir (disambiguation) explained
Sir is a respectful form of address for a man, and a formal title used in the United Kingdom for knights and baronets.
Sir, SIR or SiR may also refer to:
Places
Iran
West Bank
Others
- Sir Creek, on the border between India and Pakistan
People
- Sir (singer), American singer, songwriter, record producer
- Jaroslav Šír (born 1923), Czechoslovak former skier
- József Sir (1912–1996), Hungarian sprinter
- Sedat Sir (born 1975), Turkish-Australian former Australian Rules footballer
Entertainment
- Sir (1993 film), a Bollywood film
- Sir (A Series of Unfortunate Events), a fictional character in A Series of Unfortunate Events
- Sir (album), by Fischerspooner
- Sir (2018 film), an Indian Hindi-language romantic drama film
- "Sir", a song by Nicki Minaj from Queen
SIR
Organizations
Mathematics and statistics
- Sequential Importance Resampling, in mathematics, a particle filtering algorithm
- Signal-to-interference ratio, in telecommunication, the ratio of useful signal versus co-channel interference received
- Short interest ratio, a metric signalling prevailing investors' sentiment
- SIR model, a compartmental model of the progress of an epidemic
Other uses
- SIR proteins (silent information regulator), in molecular biology
- Saskatchewan International Raceway, a Saskatoon drag strip
- Security Industry Registry, a corporate service provided by the New South Wales Police Force
- Siantar railway station, Pematang Siantar, Indonesia (station code: SIR)
- Singapore Infantry Regiment, the main formation of the Singapore Army
- Sion Airport (IATA code: SIR), the airport in Sion, Switzerland
- South Indian Railway, an early Indian railway company
- Staten Island Railway, rapid transit line in the borough of Staten Island, New York, United States
- Statutory Invention Registration, publication of an invention by the United States Patent and Trademark Office
- Surrey Iron Railway, a horse-drawn plateway that linked the former Surrey towns of Wandsworth and Croydon
- Serial Infrared, a category of Infrared Data Association
- Secondary Image Registration, a type of passive autofocus
- Supplemental Inflatable Restraint or airbag, a vehicle safety device
Other uses
- Sır Dam, on the Ceyhan River in Turkey
- Sirene (Sir in Serbian), a type of cheese
See also