RSS is a three-letter abbreviation that can stand for a wide variety of terms.

Mathematics

• Root-sum-square, the square root of the sum of the squares of the elements of a data set

Technology

• RSS (file format), Really Simple Syndication, Rich Site Summary or RDF Site Summary, several similar forms of web syndication used by news websites and weblogs
• Radio Service Software, a proprietary suite of programs sold by Motorola
• Resident Set Size, the portion of a process that exists in physical memory (RAM)
• Rotary Steerable System, a tool used in the drilling industry to autonomously drill to a predetermined target
• Received Signal Strength, a technique used to locate nodes in Wireless Sensor Networks
• Receive-Side Scaling, a network driver technology that enables the distribution of network receive processing across multiple CPUs in multiprocessor systems.

Science

• Residual sum of squares, in regression models

Medicine

• Recombination signal sequence
• Repetitive strain injury, also Repetitive stress syndrome, an overuse syndrome
• Russell-Silver syndrome

Social organizations

• Rashtriya Swayamsevak Sangh, a Hindu nationalist organization in India

Society

• Radio Security Service, British organisation in WWII using mainly radio amateurs to monitor radio frequencies for enemy activity.
• Regional Spatial Strategy provides a regional level planning framework for the regions of England
• Regional Security System, an agreement between several countries situated in the Eastern Caribbean region. The RSS acts as a unit made up of a series of defence and disaster management forces
• Royal Statistical Society, the main scientific and professional body for statisticians in the UK

• Rochester Subway, which had the AAR reporting mark, RSS
• Rockdale, Sandow and Southern Railroad, which currently has the AAR reporting mark RSS

School

• Red Swastika School, Singapore
• Riverside Secondary School, Windsor, Ontario, Canada

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.