Police ranks of India

rank in British police services and in most English-speaking Commonwealth nations

police rank used in Commonwealth police forces

Sub-inspector (SI), or sub-inspector of police or police sub-inspector (PSI), is a rank used extensively in South Asia: in the police forces of Bangladesh, Pakistan, India, and Sri Lanka, which are primarily based on the British model. It was formerly used in most British colonial police forces and in certain British police forces as well. The rank usually was in charge of a police substation or assisted an inspector.

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senior rank in Indian Police Service

official position in certain police forces

head of the state police force in India