Alexander Ferdinand Grychtolik, born on September 6, 1980 in Berlin, is a German harpsichordist, improviser, conductor, and music researcher. He received the Franz Liszt Prize in 2005 and studied under Bernhard Klapprott and Frédérick Haas at the Royal Conservatory of Brussels. He held the first teaching position for Baroque Improvisation Practice at the Hochschule für Musik "Franz Liszt" in Weimar. He performed both nationally and internationally as a harpsichordist, organist, and as an ensemble leader. His notable achievements include reconstructing a late version Bach's St. Mark Passion, and creating the first complete reconstruction of Bach's Köthen Funeral Music.