EFS

EFS may refer to:

• Canon EF-S lens mount, a derivative of Canon's EF lens mount
• Electronic Filing System, an electronic platform by the Singapore Judiciary
• Electronic Filing System, an electronic platform for the United States Patent & Trademark office
• Embryonal fyn-associated substrate, a CAS family protein also known as SIN or CASS3.
• Emergency Fire Service, now Country Fire Service (Australia)
• Emperor of the Fading Suns, a turn-based, strategy video-game
• Encrypting File System, the encryption subsystem of the NTFS file system
• Escape from Samsara, a London based nightclub
• Estrada de Ferro Sorocabana, a Brazilian railway
• Ethnological Forgery Series (E.F.S), a series of songs by the krautrock band Can
• European Federation of Sexology, an organisation for sexology in Europe
• Swedish Evangelical Mission, abbreviated EFS (Evangeliska fosterlandsstiftelsen in Swedish)
• Expenditure and Food Survey, a statistical survey conducted annually by the Office for National Statistics in Great Britain
• Extent File System, a file system used in the IRIX operating system
• Event-Free Survival, in medicine (see Disease-free survival)