A proton is a subatomic particle.
Proton may also refer to:
In chemistry[edit]
- Proton, the hydron ion (notated H+
) - Proton, hydronium (also called hydroxonium) ion (notated H
3O+
) - Proton-pump inhibitor, a group of drugs
- Proton conductor, an electrolyte
- Proton-coupled electron transfer, a chemical reaction mechanism
- Proton spectrum, the nuclear magnetic resonance spectrum of the 1H nucleus
In entertainment[edit]
- Proton Competition, a German auto racing team
- Proton F.C., football club in the Malaysian Premier League sponsored by the carmaker that existed between 1986 and 2009
- Proton Radio, an internet electronic music station
In technology[edit]
- Ozone Proton, a French paraglider design
- Protei-5 Russian diver propulsion vehicle called a "Proton", Russian diver propulsion vehicle
- Proton (rocket family), Russian uncrewed space vehicle design
- Proton satellite, Soviet satellite
- Proton-transfer-reaction mass spectrometry, a technique to monitor volatile organic compounds online
- ProtonMail, an encrypted email service operated by the Swiss company Proton AG
- Proton (software), a Wine-based compatibility tool for Linux
- ProtonVPN, a VPN service operated by the Swiss company Proton AG
- Original name of the BBC Micro microcomputer
- Proton, a make of rebreather breathing set made by Siebe Gorman
In business[edit]
- Proton (Swiss company), a technology company offering privacy-focused online services
- Proton (debit card), a discontinued electronic debit card from Belgium
- Proton Bank, an investment bank in Greece
- Proton Electronic a Taiwanese manufacturer of consumer audio and video equipment founded in 1964
- Proton Holdings, a Malaysian car producer
Other uses[edit]
- USS Proton (AG-147), a US Navy tank landing ship
- Professor Proton, a fictional scientist
- Proton (band), an Australian rock band