IRS (disambiguation)

• Chinese Democracy
• I.R.S. Records
• IR$
• IRS
• IRS Airlines
• Immune reconstitution syndrome
• Imperium Romanum Sacrum
• Independence Republic of Sardinia
• Indian Readership Survey
• Indian Remote Sensing satellite
• Indian Revenue Service
• Indoor residual spraying
• Industrial Railway Society
• Information Retrieval System
• Institute of Regional Studies
• Institutionalized Riot Systems
• Insulin receptor substrate
• Integrated reception system
• Interest rate swap
• Intergroup Rhabdomyosarcoma Study Group
• International Railway Systems
• International Rules Series
• International Union of Railways
• Leibniz Association
• Leibniz Institute for Research on Society and Space
• Mike Rotunda
• independent suspension
• inertial navigation system