Harvey Mudd College's Regular Decision acceptance rate for the application year 2023 stands at 12.6%, with 450 out of 3,560 applicants admitted. Unfortunately, data for previous years is largely missing, as only the current year displays concrete acceptance figures. The consistent figure of 12.6% in 2023 indicates stability in selectivity compared to potential fluctuations in earlier years, though historical trends remain unclear due to the lack of data.