- universal quantum cloning
- universal quantum computer
- universal quantum gate
- universal quantum gates
- universal quasi-chemical activity-coefficient
- universal recursive function
- universal relation
- universal representation
- universal R matrix
- universal R-matrix
- universal scaling function
- universal seismograph
- universal sentence
- universal sequence of periodic orbits
- universal serial bus
- universal serial bus, USB
- universal series
- universal service
- universal set
- universal singularity
- universal social welfare
- Universal Soil Loss Equation
- universal solution
- universal source coding
- universal space