Sirr may refer to:
People People with the surname Sirr, including: Henry Charles Sirr (1807–1872), British lawyer, diplomat and writer Henry Charles Sirr (soldier) (1764–1841), Irish soldier, police officer, wine merchant and collector of documents and curios Peter Sirr (born 1960), Irish poet People with the given name Sirr, including: Sirr Al-Khatim Al-Khalifa (1919–2006), Sudanese politician and ambassador Sirr Parker (born 1977), former college and professional football running back
Other Sirr, one of the six Lataif-e-sitta or psychospiritual "organs" in Sufi psychology
Acronyms SIRR may mean: Seremban Inner Ring Road, Malaysia Southern Illinois River-to-River Conference, a high school athletic conference