We report the first measurement of the absolute flux-integrated cross section of νµ charged current single π 0 6 production on argon. This measurement was performed with the MicroBooNE 7 detector, a liquid argon time projection chamber, utilizing neutrinos produced by the Fermilab 8 Booster Neutrino Beam. The analysis uses the first fully automated electromagnetic shower 9 reconstruction employed to analyze data from a liquid argon time projection chamber.