Osmosis is the movement of molecules through a membrane.

Osmosis may also refer to:

• Capillary osmosis, the motion of liquid in a porous body
• Electro-osmosis, the motion of liquid induced by an applied potential
• Forward osmosis, a process that uses a semi-permeable membrane to effect separation of water from dissolved solutes
• Reverse osmosis, a membrane-technology filtration method
• Pressure-retarded osmosis, the salinity gradient energy retrieved from the difference in the salt concentration between seawater and river water
• Standing gradient osmosis, the reabsorption of water against the osmotic gradient in the intestines

• Osmosis Jones, a 2001 live-action/animated comedy film and the main character
  • Osmosis Jones (soundtrack), the soundtrack for the named film
• Osmosis Records (Osmose Productions), a French independent record label
• Ozzmosis, a studio album by heavy metal musician Ozzy Osbourne
• Osmosis, a reissue of an album originally released in 1961 as Bash!
• Osmosis (TV series), a 2019 science-fiction Netflix series

• Osmosis (band), a band whose song "She (Didn't Remember My Name)" peaked at number 2 in Australia in 1974; see List of Top 25 singles for 1974 in Australia
• Osmosis demonstration, a set of techniques used in schools to instruct students
• Social osmosis, the indirect infusion of social/cultural knowledge
• Osmosis, is a command line Java application for processing OpenStreetMap data
• Osmosis (solitaire), a solitaire card game
• "Osmosis", song by Good Kid, 2023

• All pages with titles containing Osmosis
• Electrokinetic phenomena
• Osmotic pressure
• Osmotrophy
• Passive transport
• Plasmolysis