Gregg may refer to:
- Gregg (surname)
- Gregg Sulkin, British actor
- Gregg, California, United States
- Gregg shorthand, a system of shorthand named after creator John Robert Gregg
- Gregg Style Manual, a widely-used secretarial manual used for business (10th edition, ISBN 0-07-293653-3)
- Greggs, the largest specialist retail bakery chain in the United Kingdom