2023 NASCAR Whelen Modified Tour

The 2023 NASCAR Whelen Modified Tour was the thirty-ninth season of the NASCAR Whelen Modified Tour, a stock car racing tour sanctioned by NASCAR. It began with the New Smyrna Beach Visitors Bureau 200 at New Smyrna Speedway on February 11 and ended with the Virginia is for Racing Lovers 200 at Martinsville Speedway on October 26.

Jon McKennedy entered the season as the defending series champion. McKennedy did not defend his title as the result of his race team folding partway through the season, which caused him to only run a part-time schedule. Ron Silk won his second series championship in 2023, previously winning the 2011 championship. Silk became the seventh driver to win multiple championships in the series.

On July 12, 2023, driver J. B. Fortin was suspended by NASCAR after he physically fought a NASCAR official after the race at Wall Stadium. He was reinstated by NASCAR on September 15.

Schedule
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Schedule changes

 * The Duel at the Dog 200 at Monadnock Speedway was moved from June to May.
 * The May races at Lee USA Speedway and Riverhead Raceway both moved back a week from where they were on the schedule in 2022.
 * Seekonk Speedway in Massachusetts returned to the schedule for the first time since 2019. It replaced the race at Jennerstown Speedway in Pennsylvania.
 * Lancaster Motorplex in New York returned to the schedule for the first time since 2021.
 * A race at Claremont Speedway in New Hampshire was originally scheduled for July 29th. It was canceled due to rain, and not rescheduled.
 * A second race at Monadnock Speedway in New Hampshire was added in September.
 * A race at the reopened North Wilkesboro Speedway in North Carolina was added in September.

Drivers' championship
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(key) Bold – Pole position awarded by time. Italics – Pole position set by final practice results or rainout. * – Most laps led. ** – All laps led.