- y
- Y2K
- ya
- yaaas
- yaar
- yaba
- yabba
- yabber
- yabby
- Yablonovy Mountains
- Yablonovyy Range
- yacca
- yacht
- yacht chair
- yacht club
- yachtie
- yachting
- yachtsman
- yachtswoman
- yack
- yackety-yak
- yad
- yada-yada-yada
- yadda yadda yadda
- Yadkin
- Yad Vashem
- yae
- yaff
- yaffle
- Yafo
- YAG
- yage
- Yagi aerial
- Yagi antenna
- yah
- Yahgan
- yahoo
- Yahoos
- Yahrzeit
- Yahweh
- Yahwism
- Yahwist
- Yahwistic
- Yajur-Veda
- yak
- Yakama
- yakety-yak
- Yakima
- yakitori
- yakka
- yakow
- yaksha
- Yakut
- Yakut Autonomous Republic
- Yakutsk
- yakuza
- Yale
- Yale lock
- y'all
- Yalong Jiang
- Yalow
- Yalta
- Yalta agreement
- Yalu
- yam
- Yama
- Yamagata
- Yamamoto
- Yamani
- Yamasaki
- Yamashita
- Yamato-e
- Yambol
- yamen
- Yami
- Yamim Nora'im
- yammer
- Yamoussoukro
- Yampa
- yampee
- yampy
- Yamuna
- Yana
- Yanan
- yang
- Yang Chen Ning
- Yangon
- Yangquan
- Yang Shangkun
- Yang-shao
- yang tao
- Yangtze
- Yangtze River
- Yangzhou
- Yanina
- yank
- Yankee
- Yankee bond
- Yankeedom
- Yankee Doodle
- “Yankee Doodle Dandy”
- Yankeefy
- Yankeeism
- Yankeeland
- Yankton
- Yanktonai
- Yannina
- Yanomama
- Yanomamo
- yanqui
- Yantai
- Yao
- Yaoundé
- yap
- yapok
- yapon
- yapp
- Yapurá
- Yaqui
- yarak
- Yarborough
- yarco
- yard
- yardage
- yardang
- yardarm
- yardbird
- yard goods
- yard grass
- Yardie
- yarding
- yardland
- yard-long bean
- yardman
- yardmaster
- yard-of-ale
- yard sale
- yardstick
- yare
- Yaren
- yark
- Yarkand
- Yarkant He
- Yarmouth
- Yarmuk
- yarmulke
- yarn
- yarn-dyed
- Yaroslavl
- yarovize
- yarraman
- yarran
- Yarra River
- yarrow
- yashmak
- Yasht
- Yasmin
- Yasna
- Yastrzemski
- yataghan
- ya-ta-ta
- yate
- Yathrib
- yatter
- Yauco
- yaud
- yauld
- Yaunde
- yaup
- yaupon
- yautia
- Yavapai
- Yavarí
- yaw
- Yawata
- yawey
- yawl
- yawl-rigged
- yawmeter
- yawn
- yawner
- yawnful
- yawning
- yawnsome
- yawny
- yawp
- yaws
- Yaxchilán
- y-axis
- yay
- Yayoi
- yazata
- Yazd
- Yazidi
- Yazoo
- Yb
- YBA
- YC
- Y chromosome
- Y.C.L.
- yclad
- yclept
- Y connection
- yd.
- yds.
- ye
- yea
- Yeadon
- Yeager
- yeah
- yealing
- yean
- yeanling
- year
- year-around
- yearbook
- Yeardley
- year-end
- year in, year out
- yearling
- yearlong
- yearly
- Yearly Meeting
- yearn
- yearning
- Year of Confusion
- year of grace
- year-over-year
- year-round
- year-rounder
- year's mind
- year zero
- yeasayer
- yeast
- yeast cake
- yeast nucleic acid
- yeasty
- Yeats
- Yeats, William Butler
- yebo
- yech
- yechy
- yeddo hawthorn
- yeehaw
- yeet
- yegg
- yeggman
- Yeisk
- Ye Jianying
- Yekaterinburg
- Yekaterinodar
- Yekaterinoslav
- yeld
- Yelets
- Yelisavetgrad
- Yelisavetpol
- Yelizaveta Petrovna
- yelk
- yell
- yellow
- yellow alert
- yellow archangel
- yellow avens
- yellowback
- yellowbark
- yellow-bellied
- yellow-bellied sapsucker
- yellowbelly
- yellow bile
- yellow-billed cuckoo
- yellow-billed magpie
- yellow birch
- yellowbird
- yellow box
- yellow brain fungus
- yellow-breasted chat
- yellowcake
- yellow card
- yellow copper ore
- yellow cress
- yellow-crowned night heron
- yellow daisy
- yellow dog
- yellow-dog contract
- yellow-eye mullet
- yelloweye rockfish
- yellowface
- yellow fever
- yellow-fever mosquito
- yellowfinch
- yellowfin tuna
- yellow flag
- yellow gentian
- yellow goatfish
- yellow granadilla
- yellow-green
- yellow-green algae
- yellow gum
- yellowhammer
- Yellow Hats