| Montfort-sur-Argens | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Montfort-sur-Argens (83).svg |
| Arrondissement: | Brignoles |
| Canton: | Brignoles |
| Insee: | 83083 |
| Postal Code: | 83570 |
| Mayor: | Éric Audibert[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Provence Verte |
| Coordinates: | 43.475°N 6.1225°W |
| Elevation M: | 110 |
| Elevation Min M: | 129 |
| Elevation Max M: | 344 |
| Area Km2: | 11.92 |
Montfort-sur-Argens (in French pronounced as /mɔ̃fɔʁ syʁ aʁʒɑ̃(s)/, literally Montfort on Argens; Occitan (post 1500);: Montfòrt d'Argenç) is a commune in the Var department in the Provence-Alpes-Côte d'Azur region in southeastern France.
Montfort-sur-Argens has a hot-summer Mediterranean climate (Köppen climate classification Csa). The average annual temperature in Montfort-sur-Argens is . The average annual rainfall is with November as the wettest month. The temperatures are highest on average in July, at around, and lowest in January, at around . The highest temperature ever recorded in Montfort-sur-Argens was on 28 June 2019; the coldest temperature ever recorded was on 8 January 1985.