These are the names of the original members of the Beit Din. It is not a complete list.

Av Beit Din:
Yaakov ha-Katan b. Calphi ha-Taddik - James the Less the brother of Yeshua son of Alphaeus

Dayanim:
Shimon b. Yonah ha-Tzaddik - Simon Peter
Yochanan b. Zavdai - John son of Zebedee
Yaakov ha-Gadol b. Zavdai - James the brother of John
Andreas b. Yonah - Andrew son of John
Phillip
Nataniel b. Talmei - Bartholemew
Matityahu - Levi Matthew
Yehudah - Thomas
Yehudah b. Yaakov ha-Katan - Thaddeus Judas son of James
Shimon shel Yerushalyim - Simon the Zealot
Matthias

Chaver Beit Din:
Yosef b. Shabbat - Joseph Barsabbas (candidate with Matthias to replace Judas)
R. Shaul ha-Tarsi - Paul (most likely a member of the Sanhedrin)
R. Yosef ha-Ramathaim-Zophi - Joseph of Arimathea (most likely a member of the Sanhedrin)