| name | named after | image | Area (m²) | continent | elevation (m) | latitude (°) | Length (m) | longitude (°) | waterbody | Width (m) | waterbody | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cooley Peninsula |  | 155,000,000 | 54.0344444400 | -6.2266666700 | Irish sea | Map | ||||||
| Llŷn Peninsula |  | 52.9091666700 | -4.4613888900 | Irish sea | Map | |||||||
| Ards Peninsula |  | 54.5000000000 | -5.5000000000 | Irish sea | Irish sea | Map | ||||||
| Wirral Peninsula |  | Europe | 53.3333320618 | -3.0833332539 | Irish sea | Irish sea | Map |