Guilligomarc'h (Breton: Gwelegouarc'h) is a commune in the Finistère department of Brittany in north-western France.

Inhabitants of Guilligomarc'h are called in French Guillogomarc'hois.

Historical population

Year Pop. ±% p.a. 1793 1,000 —     1800 1,050 +0.70% 1806 957 −1.53% 1821 936 −0.15% 1831 1,005 +0.71% 1836 1,056 +0.99% 1841 1,038 −0.34% 1846 1,141 +1.91% 1851 1,053 −1.59% 1856 1,070 +0.32% 1861 1,111 +0.75% 1866 1,113 +0.04% 1872 1,011 −1.59% 1876 1,056 +1.09% 1881 1,064 +0.15% 1886 1,125 +1.12% 1891 1,206 +1.40% 1896 1,210 +0.07%	Year Pop. ±% p.a. 1901 1,257 +0.77% 1906 1,228 −0.47% 1911 1,276 +0.77% 1921 1,284 +0.06% 1926 1,275 −0.14% 1931 1,172 −1.67% 1936 1,142 −0.52% 1946 1,250 +0.91% 1954 924 −3.71% 1962 936 +0.16% 1968 666 −5.51% 1975 560 −2.45% 1982 569 +0.23% 1990 520 −1.12% 1999 573 +1.08% 2009 694 +1.93% 2014 749 +1.54% 2020 790 +0.89%
Source: EHESS and INSEE (1968–2020)

Guilligomarc'h is located in southeastern part of Finistère department, 13 km (8.1 mi) northeast of Quimperlé and 21 km (13 mi) north of Lorient. Historically, the village belongs to Vannetais. The river Ellé forms the commune's western border and the river Scorff its eastern border. Apart from the village centre, there are about seventy hamlets.

Beg-ar-Lann Bel Air Bois de Kerlégan, le Boissière, la Bontul Botaval Botfao Bouyounou Castel Paris Château du Sachz Châtré, le Clairière, la Clos Val Coadigou Coat ar Hourc'h Coat Kerloas Commananchou Crélo Guerlé Guiscaër Kerdhervé Kerforn Kergadiou Kergroes

Kerguillerm Kerhoën Kerhulvé Keriel Keriot Kerioualo Keriouarc'h Kerjean Kerlégan Kerloas Kerloquet Kermai Kermentec Kernouarn Kerouannec Kerroc'h Kervichel Kervinel Kervöen Kervran Lann-er-Groëz Lann-Vihann-Keriot Ménégall Ménéguillou

Moulin de Kerloas Moulin de Kerlégan Moulin du Stang Muriou Nilizic Pen Prat Petit Sachz, le Pont Neuf, le Porzou Poulbet Poul-Ronjou Ronce, le Saint-Coal Saint-Éloi Stang-ar-Bider Stang-ar-Pont Stang-Mene-Moal Stanvi Toul-Tossec Traoulé Ty-Carre Ty-Glaz Ty-Meur Ty-Nevez-Kerguillerm Ty-Nevez-Keriot

The oldest surviving parish registers date back to 1624.

• 
  The town hall.
• 
  Sach castle.
• 
  Saint Eloi's chapel.
• 
  Saint Julien's chapel.
• 
  Thatched roof cottage in Saint-Eloi hamlet.
• 
  Old house in Saint Coal hamlet.

• Communes of the Finistère department

• Official website (in French)
• Base Mérimée: Search for heritage in the commune, Ministère français de la Culture. (in French)
• Mayors of Finistère Association (in French)