Ildefons Cerdà
| Ildefons Cerdà Sunyer | |
|---|---|
| Portrait by Ramon Martí Alsina, 1878 | |
| Born | 23 December 1815 Centelles, Catalonia, Spain | 
| Died | 21 August 1876 (aged 60) Las Caldas de Besaya, Los Corrales de Buelna, Cantabria, Spain | 
| Nationality | Spanish | 
| Citizenship | Spain | 
| Known for | Designed expansion of Barcelona known as the "Eixample" | 
| Scientific career | |
| Fields | Urban planner, civil engineer, politician | 
| Signature | |
Ildefons Cerdà Sunyer (Catalan pronunciation: [ildəˈfons səɾˈða i suˈɲe]; Spanish: Ildefonso Cerdá Suñer; 23 December 1815, Centelles (Catalonia) – 21 August 1876, Caldas de Besaya (Cantabria)) was a Spanish urban planner and civil engineer who designed the 19th-century "extension" of Barcelona called the Eixample. Because of his extensive theoretical and practical work, he is considered the founder of modern town planning as a discipline, having coined the word "urbanization".