Guillem () 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.
People with the first name Guillem 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
People with the surname Guillem Pere Guillem, Bishop of Lleida 1126-1134 Sylvie Guillem (1965-) French ballerina
Other forms Guillemó or Guillemundus, Frankish Count of Rasez and Conflent, son of Berà
See also Guilhèm, Occitan equivalent Guilherme, Portuguese equivalent Guillermo, Spanish equivalent Guillaume (given name), French equivalent Guglielmo, Italian equivalent William (name), English equivalent