Guillem incazelo engcono kakhulu yegama: Ngokucophelela, Sína, Isimanje, Isimo sengqondo, Unika. Thola Guillem kusho igama.
Guillem imvelaphi yegama lokuqala. Catalan form of William. Thola Guillem imvelaphi yegama lokuqala.
Amagama afanayo for Guillem emazweni ahlukene nezilimi ezahlukene: Bill, Billie, Billy, Guglielmo, Guilherme, Guillaume, Guillermo, Gwil, Gwilherm, Gwilim, Gwillym, Gwilym, Illiam, Jami, Jelle, Liam, Pim, Uilleag, Uilleam, Uilliam, Ulick, Vilĉjo, Vilém, Vilhelm, Vilhelmas, Vilhelmi, Vilhelmo, Vilhelms, Vilhjálmur, Vilho, Vili, Viliam, Vilim, Vilis, Viljami, Viljem, Viljo, Vilko, Ville, Villem, Vilmos, Wil, Wilhelm, Wilhelmus, Wilkin, Wilky, Will, Willahelm, Willem, Willi, William, Willie, Willy, Wilmot, Wim, Wiremu, Wöllem, Wullem, Wum. Thola Guillem kwezinye izilimi.
Amagama avame kakhulu ngegama lomsebenzisi Ottman: Korey, Carmine, Faye, Guillermo. Thola Amagama ahamba ne- Ottman.