The plant-specific RNA Polymerase V (Pol V) plays a key role in gene silencing, but its role in repair of double stranded DNA breaks is unclear. Excision of the transposable elementmPingcreates double stranded breaks that are repaired by NHEJ. We measuredmPingexcision site repair in multiple DNA methylation mutants includingpol Vusing anmPing:GFPreporter. Two independent mutant alleles ofpol Vshowed less GFP expression, indicating that the Pol V protein plays a role in excision site repair. Sequence analysis of thepol Vexcision sites indicated an elevated rate of large deletions consistent with less efficient repair. These results clarify the role of Pol V, but not other RNA-directed DNA methylation proteins (Pol IV) or maintenance DNA methylation pathways (MET1), in the repair of double-strand DNA breaks.