| Callsign: | CHEM-DT |
| Branding: | TVA (general) |
| Digital: | 8 (VHF) |
| Virtual: | 8 |
| Affiliations: | TVA |
| Airdate: | August 29, 1976 |
| Location: | Trois-Rivières, Quebec |
| Country: | Canada |
| Former Callsigns: | CHEM-TV (1976–2011) |
| Former Channel Numbers: | Analogue: 8 (VHF, 1976-2011) |
| Owner: | Groupe TVA |
| Former Affiliations: | Réseau Pathonic (1986–1990) |
| Erp: | 11.5 kW |
| Haat: | 291.5 m |
| Coordinates: | 46.5019°N -72.6361°W |
| Homepage: | TVA Trois-Rivières |
CHEM-DT is the TVA owned-and-operated television station in Trois-Rivières, Quebec, Canada. It broadcasts a high-definition digital signal on VHF channel 8 from a transmitter on Rue Principale in Notre-Dame-du-Mont-Carmel.
Owned by the Groupe TVA subsidiary of Quebecor Media, its studios are located on Boulevard de Chanoine-Moreau and Rue Jacques de Labadie in Trois-Rivières. This station can also be seen on Cogeco Cable channel 7 and in high definition on digital channel 503.
The station was founded on August 29, 1976 and was owned by Telemedia. It was originally a semi-satellite of CHLT-TV in Sherbrooke, and has been a TVA station for its entire existence. Pathonic Communications bought CHEM and four other stations in 1979. Sometime in the 1980s, CHEM severed the electronic umbilical cord with CHLT and became a full-fledged station. Télé-Metropole, owner of TVA flagship station CFTM-TV in Montreal, bought Pathonic in 1989, and since then CHEM has essentially been a semi-satellite of CFTM.