John Plummer (also Plomer, Plourmel, Plumere, Polmier, Polumier; c. 1410 – c. 1483) was an English composer who flourished during the reign of Henry VI of England. Not many of Plummer's compositions survive - only the motets Anna mater matris Christi (Anne, mother of the mother of Christ) and Tota Pulchra Es (My Love is Wholly Beautiful) are widely available, recorded by the Hilliard Ensemble. A number of Plummer's compositions appear in the manuscript Brussels Biliothèque Royale MS 5557. During his own lifetime, knowledge and performance of his works spread at least as far as the present-day Czech Republic, where pieces such as Tota Pulchra Es were copied into the Codex Speciálník (c. 1500). These pieces are unaccompanied sacred vocal music written for use in the great royal and noble cha