Zephyr may refer to:
- A light wind or west wind
- Zephyrus, one of the Anemoi and the Greek god of the west wind
- Zephyranthes, a plant genus whose species include the zephyr lily
- Zephyr (graffiti artist), a well-known graffiti artist from New York City
- Zephyr (Wooldridge), a 1998 stainless steel sculpture by Steve Wooldridge on the IUPUI campus
- Zephyr, codename of the Soviet spy Mikhail Mukasei, active from the 1940s through the 1970s
- ZEPHYR (code word), a tobacco industry code word for lung cancer
- Zephyr, North Carolina
- Zephyr, Texas
- Zephyr, Ontario
- Zephyr Glacier
- Zephyr Teachout, associate professor of law at Fordham University
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