Barbara Ployer
 Maria Anna Barbara or Babette Ployer (2 September 1765–before April 1811) was an Austrian piano and composition pupil of Wolfgang Amadeus Mozart for whom he wrote two piano concertos in 1784 No. 14 KV. 449 and No. 17 KV. 453 which were both premiered at her residence by her in 1784.She was born on 2 September 1765 in Sarmingstein Austria and died before April 1811 in Bresane Croatia. She was the daughter of Franz Kajetan Ployer a timber-merchant and tax collector.