IRS
IRS is an abbreviation for:
- Immunoreactive Score , rating scale for the detection of an antigen-antibody reaction
- Independent rear suspension , independent wheel suspension on the rear axle
- Indian Register of Shipping , Indian classification society
- Indian Remote Sensing , a series of Indian Earth observation satellites
- Institute for Space Systems
- Insulin receptor substrate (IRSp53), structural protein in vertebrates
- Intelligence, reconnaissance, surveillance - the intelligence service area of the Bundeswehr
- Interest rate swap , an interest rate derivative, see interest rate swap
- Internal Revenue Service , the United States federal tax agency
- International reporting system for faults in nuclear facilities, see International Atomic Energy Organization # IRS (International Reporting System for Operating Experience)
- Leibniz Institute for Spatial Social Research , German research institution, formerly Leibniz Institute for Regional Development and Structural Planning
IRS is an abbreviation for:
- Irwin R. Schyster , ring name of Mike Rotunda (* 1958), American wrestler
