| Type: | commune |
| County: | Cluj |
| Tritenii de Jos | |
| Subdivisions: | Clapa, Colonia, Pădureni, Tritenii de Jos, Tritenii de Sus, Tritenii-Hotar |
| Leader Name: | Alexandru-Iosif Dan |
| Leader Party: | Green Party |
| Leader Term: | 2020 - 2024 |
| Coordinates: | 46.5861°N 23.9965°W |
| Elevation: | 364 |
| Elevation Min: | 300 |
| Elevation Max: | 525 |
| Area Total: | 59.48 |
| Population Total: | auto |
| Postal Code: | 407550 |
| Area Code: | (+40) 02 64 |
Tritenii de Jos (Hungarian: Alsódetrehem) is a commune in Cluj County, Transylvania, Romania. It is composed of six villages: Clapa (Szentkirályi tanya), Colonia (Detrehemtelep), Pădurenii (Țigăreni until 1964, also formerly called Coc; Mezőkók), Tritenii de Jos, Tritenii de Sus (Felsődetrehem), and Tritenii-Hotar (Irisorai tanyák).
The commune is situated on the Transylvanian Plateau, at an altitude of, on the banks of the river Valea Largă. It is located in the southeastern part of Cluj County, east of Turda and southeast of the county seat, Cluj-Napoca, on the border with Mureș County.
According to the census from 2002 there was a total population of 5,066 people living in this commune. Of this population, 90.99% were ethnic Romanians, 8.23% were ethnic Hungarians and 0.75% ethnic Romani.[1] At the 2011 census, the population had decreased to 4,240, of which 88.84% were Romanians and 8% Hungarians. At the 2021 census, Tritenii de Jos had a population of 3,950, of which 87.92% were Romanians and 6.33% Hungarians.[2]