| Arntor | |
| Type: | studio |
| Artist: | Windir |
| Cover: | Arntor.jpg |
| Released: | 11 October 1999 |
| Recorded: | August–October 1998 |
| Genre: | Melodic black metal, Viking metal, folk metal |
| Language: | Sognamål |
| Label: | Head Not Found |
| Producer: | Pytten |
| Prev Title: | Sóknardalr |
| Prev Year: | 1997 |
| Next Title: | 1184 |
| Next Year: | 2001 |
Arntor is the second studio album by Norwegian black metal band Windir. It was released on 11 October 1999 through the record label Head Not Found. It is the last record released with Valfar playing the majority of the instruments.
AllMusic praised the album, writing, "this album's importance in the grand scheme of Scandinavian heavy metal is difficult to overstate, and if Sweden's Bathory were responsible for introducing the Viking metal concept to begin with, then the watershed Arntor gave Windir a strong case as heirs to their throne, by showing the way forward for the genre's future disciples."