| Galdakao | |
| Settlement Type: | Municipality |
| Other Name: | Galdácano |
| Pushpin Map: | Spain Basque Country |
| Pushpin Map Caption: | Location of Galdakao within the Basque Country |
| Subdivision Type: | Country |
| Subdivision Name: | Spain |
| Subdivision Type1: | Autonomous community |
| Subdivision Name1: | Basque Country |
| Subdivision Type2: | Province |
| Subdivision Name2: | Biscay |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | Greater Bilbao |
| Coordinates: | 43.2306°N -2.8458°W |
| Elevation M: | 60 |
| Elevation Min M: | 48 |
| Elevation Max M: | 326 |
| Area Total Km2: | 31.66 |
| Population Demonym: | Galdakar, Galdakoztar, G-town |
| Population Density Km2: | auto |
| Blank Name Sec1: | Official language(s) |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 48960 |
| Area Code Type: | Dialing code |
| Leader Title: | Mayor |
| Leader Name: | Iñigo Hernando Arrandiaga |
| Leader Party: | Basque Country Unite |
Galdakao is a town and municipality located in the province of Biscay, in the Basque Country.
It is located in the Greater Bilbao, in the valley of the Ibaizabal river, near the Ganguren mountain range. It is surrounded by some summits such as Arrezurriaga (329 m), Txispamendi (221 m) and Santa María (476 m) in the north and Upo (556 m) and Mandoia (640 m) in the south.
It is coterminous with Zamudio, Lezama and Larrabetzu in the north, with Zaratamo and Zeberio in the south, with Amorebieta, Lemona and Bedia in the east and with Etxebarri and Basauri in the west.