The crash happened in Granges-pres-Marnand in Vaud canton, about 50km (30 miles) south-west on the capital, Bern.
The regional trains collided head-on in the early evening.
The driver of just one in the trains died from the incident and the body was recovered from your wreckage in early stages Tuesday morning, Swiss police said.
Rescuers work the web page of an train accident
Rescue act on the internet site continued into Tuesday morning
Emergency workers had succeeded in separating each locomotives and located the driver's body in a single of them.
An autopsy has become ordered to formally establish his identity, a police statement said.
Additional driver was one of several injured.
Essentially the most seriously injured passengers had earlier been arrive at hospital by helicopter or ambulance. Others were treated on the scene.
Among the trains involved was bound for Lausanne, about 38km (22 miles) to florida, while the other was travelling north through the same city, AFP wire service reports.
There would be no trains threatened between towns of Lucens and Payerne on Tuesday, local police said.
Investigators are in the scene to try to determine the reason for the crash.
Switzerland's rail strategy is considered the most effective and safest on the planet.
Latest research by, 79 citizens were killed in a very high-speed derailment in north-western Spain.