Yalow, Rosalyn
Yamabe, Hidehiko
Yang Chen Ning Franklin
* Yang Hui
Yang–Mills action
* Yano, Kentaro
Yanofsky, Charles
Yarkovsky effect
Yasuaki Aida
* Yates Frank
Yates’ Algorithm
* Yativrsabha
Yau, Shing-Tung
* Yavanesvara
Yerkes Observatory
Ymir
Yoccoz, Jean-Christophe
Yohkoh
Yoneda Nobuo
Yorke, James
Yoshida jet
Yosida Kôsaku
* Youden, William
* Young, Alfred
* Young, Andrew
* Irwin Young Anna
Young , Charles Augustus
* Young, Grace Chisholm
Young, James Whitney
* Young, Lai-Sang
* Young, Laurence
Young Thomas
* Young, William
Young’s modulus
Young Stellar Objects (YSO)
Yponomeutoidea
Ypsilantis Tom
Ytterbium
Yttrium
Yttrium-aluminum garnet
Yuan, Ruan
Yucca
Yucca elephantipes
Yucca filamentosa
Yucca glauca
Yucca periculosa
Yucca schidigera
Yucca valida
* Yue Xu
Yukawa Hideki
Yukawa potential
Yule and Kendall Coefficient
* Yule, George
Yule Paradox (Simpson Paradox)
* Yunus, Abu'l-Hasan ibn
Yushania
Yushania alpina
Yushania brevipaniculata
Yushania chungii
Yushania glauca
Yushania hirsuta
Yushania levigata
Yushania lineolata
Yushania microphylla
Yushania niitakayamensis
* Yushkevich, Adolph P
* Yusuf Ahmed ibn
