Immersion
Immersion may refer to:

The arts
"Immersion", a 2012 story by Aliette de Bodard
Immersion, a French comic book series by Léo Quievreux
Immersion (album), the third album by Australian group Pendulum
Immersion (film), a 2021 Chilean thriller film
Immersion (series), a webseries which test the concepts of video games in real life, created by Rooster Teeth Productions
Immersion journalism, a style of journalism

Science and technology
Immersion lithography or immersion microscopy, optical techniques in which liquid is between the objective and image plane in order to raise numerical aperture
Immersion (mathematics), a smooth map whose differential is everywhere injective, related to the mathematical concept of an embedding
Immersion (virtual reality), the perception of being physically present in a non-physical world, created by using VR

Other uses
Immersion baptism, a type of baptism whereby the subject is immersed in water
Immersion Corporation, a haptic technology developer
Immersion heater, a kind of water heater
Immersion therapy, overcoming fears through confrontation
Language immersion, a method of teaching a second language in which the target language is used for instruction