Guillem (Catalan pronunciation: [ɡiˈʎɛm]) is a Catalan first name, equivalent to William in the English language, which occasionally can appear as a surname. Its origin and pronunciation are the same as its Occitan variant Guilhèm, with a different spelling.

• Guillem I de Cerdanya ((1068–1095); anglicised William I of Cerdanya), Count of Cerdanya and Berga
• Guillem Ademar (fl. 1190/1195–1217), troubadour
• Guillem Agel i Barrière (1753-1832), publisher and printer from Roussillon
• Guillem Agulló i Salvador (1975–1993), murdered Valencian member of Maulets
• Guillem Augier Novella, 13th century French troubadour
• Guillem Balagué, sports journalist
• Guillem Bauzà (1984-), Majorcan football player
• Guillem Bofill, Catalan architect of the Girona Cathedral
• Guillem Colom Ferrà (1890–1979), Majorcan translator and poet
• Guillem d'Areny-Plandolit (1822–1876), Andorran politician who led the New Reform

• Guillem de Balaun (fl. bef. 1223), Castellan of Balazuc and troubadour
• Guillem de Cabestany (1162–1212), Catalan troubadour
• Guillem de Cervera, more commonly known as Cerverí de Girona (fl. 1259–1285), Catalan troubadour
• Guillem d'Efak, Majorcan singer born in Equatorial Guinea
• Guillem de Gellone (755 – 28 May (traditional) 812/4; Occitan spelling, Guilhèm de Gellone; anglicised William of Gellone) Second count of Toulouse, cousin of Charlemagne
• Guillem de Masdovelles (1389–1438), Catalan soldier, courtesan, politician, and poet
• Guillem de Ribes (born c.1140), nobleman (castellan) of Sant Pere de Ribes and troubadour
• Guillem de Saint Leidier, 12th century troubadour
• Guillem de Septimània (826 – 850; anglicised William of Septimania), Count of Barcelona and Toulouse
• Guillem Figueira, Languedocian jongleur and troubadour from Toulouse active at the court of the Emperor Frederick II in the 1230s
• Guillem Magret (fl. 1195–1210), troubadour
• Guillem Rainol d'At (fl. 1209), Provençal troubadour
• Guillem Ramon de Gironella, late 13th century troubadour
• Guillem Timoner Obrador (1926-), Majorcan cyclist
• Peire Guilhem de Luserna, 13th century troubadour
• Peire Guillem de Tolosa, 13th century troubadour

• Pere Guillem, Bishop of Lleida 1126-1134
• Sylvie Guillem (1965-) French ballerina

• Guillemó or Guillemundus, Frankish Count of Rasez and Conflent, son of Berà

• Guilhèm, Occitan equivalent
• Guilherme, Portuguese equivalent
• Guillermo, Spanish equivalent
• Guillaume (given name), French equivalent
• Guglielmo, Italian equivalent
• William (name), English equivalent

Name list

This page or section lists people that share the same given name or the same family name.
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