| Type: | suburb |
| Mariginiup | |
| City: | Perth |
| State: | wa |
| Lga: | City of Wanneroo |
| Map Type: | nomap |
| Local Map: | yes |
| Zoom: | 12 |
| Coordinates: | -31.712°N 115.837°W |
| Pushpin Map Caption: | Location in metropolitan Perth |
| Postcode: | 6078 |
| Stategov: | Wanneroo |
| Fedgov: | Pearce |
| Near-Nw: | Banksia Grove |
| Near-N: | Pinjar |
| Near-Ne: | Melaleuca |
| Near-W: | Tapping |
| Near-Sw: | Ashby / Sinagra |
| Near-S: | Wanneroo |
| Near-Se: | Jandabup |
Mariginiup is an outer northern suburb of Perth, Western Australia, located within the City of Wanneroo.
The suburb was seriously affected by the 2023 Wanneroo bushfire.