Rapid(s) or RAPID may refer to:

• Rapids, sections of a river with turbulent water flow
• Rapid Creek (Iowa River tributary), Iowa, United States
• Rapid Creek (South Dakota), United States, namesake of Rapid City

• SK Rapid Wien, an Austrian club
• FC Rapid Ghidighici, a Moldovan club
• SK Rapid, a Norwegian club
• FC Rapid București, a Romanian club
• FK Rapid Bratislava, a Slovak club
• SV Rapid Marburg, a Yugoslav former club that today would be Slovene
• Colorado Rapids, an American team

• Rapid (brig), the ship that brought William Light's surveying party to South Australia in 1836
• The Rapid, popular name of RTA Rapid Transit, the rail transit service of Cleveland and surrounding Cuyahoga County, Ohio
• The Rapid, a bus system in the Greater Grand Rapids, Michigan area
• Rapid (San Diego), a BRT system serving the Greater San Diego region in California
• Rapid Rail, a rapid transit operator in Malaysia
• Rapid Bus, a bus operator in Malaysia
• Rapid Ferry, a ferry operator in Penang, Malaysia
• Renault Rapid, a van
• Škoda Rapid (disambiguation), several cars built by Škoda Auto
• Società Torinese Automobili Rapid, also known as Rapid, an Italian car manufacturer between 1904 and 1921

• RAPID, a programming language used to control industrial robots
• Rural Address Property IDentification
• Refinery and Petrochemical Integrated Development Project, part of the Pengerang Integrated Petroleum Complex
• Rapid Advancement in Process Intensification Deployment, a Manufacturing USA research institute

• Bob Feller (1918–2010), American Hall-of-Fame baseball pitcher nicknamed "Rapid Robert"
• Rabid (disambiguation)
• Rabit (disambiguation)
• Rapit
• Rapid antigen test