| Paul de Arzila Nature Reserve | |
| Iucn Category: | IV |
| Location: | Coimbra, Portugal |
| Area Km2: | 5.87 |
| Area Ref: | [1] |
| Established: | 1988 |
| Governing Body: | ICNF |
Paul de Arzila (Arzila Bog) is a Portuguese natural reserve occupying an area in Coimbra municipality (in Arzila), and neighbouring municipalities of Condeixa-a-Nova and Montemor-o-Velho. It is a biogenetical reserve with an area of 150 ha framed in a protected area of 535 ha, where 119 species of birds, 12 of mammals, 10 of reptiles, 13 of fish and 201 of spiders were inventoried.