- Yaene
- Yallingup Beach
- Yallow Stone Reef
- Yamada Coral farm
- Yamada Point
- Yamada Sunachi
- Yamamoto Special
- Yanui Beach
- Yapak
- Yelken Kaya
- Yellow Sub
- Yenbuba Jetty
- Yenkoranu Jetty
- Yilanci Burnu
- Yo-257 & San Pedro
- Yogn 82
- Yokohishi
- Yokoshima 2 gōchi
- Yokoshima danso
- Yolanda House Reef
- Yonaguni Monument
- Yonara Channel
- Yonehara Reef
- Yongala Wreck
- York Shoal
- Yoron Island
- Yotsushima Jetty
- Yubanta
- Yucab Reef
- Yugawara Aqua Park