Quantum leap or variation, may refer to:
In general
Quantum leap (physics), also known as quantum jump, a transition between quantum states
Atomic electron transition, a key example of the physics phenomenon
Paradigm shift, a sudden change of thinking, especially in a scientific discipline
Tipping point (sociology), a sudden and drastic change of behavior by group members in a social environment
Arts and entertainment
Quantum Leap (1989 TV series), a 1989–1993 American television series
Quantum Leap (2022 TV series), a revival of the 1989 series
The Quantum Leap, a public art sculpture in Shrewsbury, England
Quantum Leap, a 2021 album by Gus G
Emergency: Quantum Leap, a 2019 EP by X1
"Quantum Leap" (The Upper Hand), a 1995 television episode
Other uses
Sinclair Quantum Leap or QL, a personal computer from Sinclair
Quantum Leap Technology, a (defunct) U.S. fuel cell company