Emergency services were called to a collision near the Belton Garden Centre around midday.
The collision involved a motorcycle and a silver Toyota Corolla.
“The motorcycle rider, a man in his 50s from the Derbyshire area, was sadly pronounced dead at the scene,” said a Lincolnshire Police spokesman.
A section of the A607 was closed in both directions for several hours during the incident while emergency services were in attendance.
“If you have witnessed the incident or have dashcam footage available, we’d like to hear from you,” said the statement.
If you can help, call 101 quoting incident 121 of April 4.Or email [email protected] - remember to include incident 121 of April 4 in the subject line.
You can call anonymously, via the independent charity CrimeStoppers on 0800 555 111 or online.