KSR is an initialism that may mean:

• Kendall Square Research
• Keyboard Send Receive, a type of teleprinter that contains a keyboard but no punched tape equipment
• Kim Stanley Robinson
• a kinetic sculpture race of human-powered amphibious works of art
• KSR v. Teleflex, a significant precedent in U.S. patent law
• Katahdin Scout Reservation, otherwise known as Camp Roosevelt, a Boy Scout camp in Maine.
• Kinase Suppressor of Ras
• ksrct, otherwise known as K.S.Rangasamy college of technology.

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