Lambert's tally includes two noms with Pistol Annies. If you don't count those, Reba is still on top.
Miranda Lambert ties Reba McEntire as the female with the most CMA Awards nominations—but only if you count two noms Lambert received with Pistol Annies in 2013. Both of these stars have amassed 50 CMA noms.
McEntire received her first CMA nom in 1983; her most recent in 2017.
Lambert received her first CMA nom in 2005; her most recent this year. She's nominated for female vocalist of the year for the 12th year in a row.