| Kruså | |
| Settlement Type: | Town |
| Pushpin Map: | Denmark Region of Southern Denmark#Denmark |
| Pushpin Map Caption: | Location in Region of Southern Denmark |
| Coordinates: | 54.8456°N 9.3986°W |
| Subdivision Type: | Country |
| Subdivision Name: | Denmark |
| Subdivision Type1: | Region |
| Subdivision Name1: | Southern Denmark |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Aabenraa Municipality |
| Area Urban Km2: | 1.5 |
| Population As Of: | 2024 |
| Population Urban: | 1515 |
| Population Density Urban Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | DK-6340 Kruså |
Kruså (in Danish pronounced as /kʰʁuˈsɔˀ/; German: Krusau) is a Danish border town and border crossing with a population of 1,515 (1 January 2024),[1] 6 kilometers north of Flensburg, situated on the European route E45. It is located in Aabenraa Municipality (prior to the Municipality Reform of 2007 in Bov municipality).
On 9 April 1940, at 4:15 am German troops crossed the border here beginning the invasion of Denmark.
Until the opening of the motorway border crossing at Frøslev Kruså was the most important crossing over land to Germany.