Pol Lt Thitiwat Asasingh of the Thalang Police was called to the scene, on the Thung Suea Khruan - Ban Don Road, at 8:30pm
He arrived to find local residents gathered over the body of the calf, estimated to have been six to eight months old.
Nearby was a Toyota Vios car registered in Nonthaburi askew by the side of the road. The car had sustained damage to its front right panels.
The driver of the car, 40-year-old Nigerian national Wisdom Chukwunonso Onwukwe, was uninjured in the accident.
He said he was driving along the road at about 50km/h when the cow ran out from the side of the road. The calf ran in front of the car, and he was unable to avoid hitting it.
Mr Onwukwe was asked to join officers at Thalang Police Station to provide his statement, while the car and the body of the calf were recovered.
Officers said they needed both as evidence in following up with the owner of the cow to pay for damages.