Police were called to the A631, Bishop Norton Road at Glentham at around 1.15pm on Sunday, June 30 where a motorbike had been in collision with an Audi car.
Emergency services attended, and the motorcyclist was pronounced dead at the scene. The driver of the car was taken to Lincoln County Hospital and his injuries are not believed to be life-threatening.
The road was closed for several hours while collision investigation work was carried out.
Police are appealing for witnesses to come forward. Anyone who has information about the incident is asked to contact the collision witness hotline on 01522 558855.
Police are still in the process of contacting the family of the deceased man and a formal identification will take place later this week.