• William Sunantra
• William Surya Harjanto
• William Surya Widjaya
• William Surya Wijaya
• William Suryajaya

• William Sutjitro
• William Syafri Maulana
• William Takasihaeng
• William Tan Natanegara
• William Tan Pangeti

• William Tanandy
• William Tandra
• William Tandy
• William Tangke Langi
• William Tangke Salle

• William Tanjaya
• William Tanu Wijaya
• William Taruk Tabang
• William Thamlin
• William Timothi Hutton

• William Tira
• William Tirta Rahardja
• William Tjaman
• William Tobing
• William Umbu Kora Wolagole

• William Usman
• William V. Tarinate
• William Valentin Hartono
• William Veterson Ruma Horbo
• William Vickram Boboy

• William Vinson
• William Viti Valdi
• William Wallace Langit Ghozi
• William Wang
• William Wantara

• William Wibisono
• William Wijata
• William Wijaya
• William Wijaya Bhanuindra
• William Wijaya Herlin Saputra

• William Wilbert Anggoro
• William Wilson
• William Wiranata
• William Wiratama
• William Y. Laukuang

• William Y. Suawah
• William Yamin
• William Yedija Dukku
• William Yohanes Keane Silaban
• William Yohannes

• William Yosan
• William Yosua Nicholas Sitanggang
• William Yudha Abri Ade
• William Yuson Gunawan
• William Zulkipli Sitinjak