Ksawery Faustyn Ignacy Zakrzewski (February 15, 1876 in Wełna [now Goślinowo] – November 18, 1915 in Poznań) was a Polish physician, independence activist, director of Poznań's Polish Gymnastic Society "Falcon", co-editor of biweekly magazine Sokół, co-founder (with Marian Seyda) of magazine Kurier Poznański. According to Bernard Chrzanowski, Zakrzewski was an initiator and co-creator of scouting in Greater Poland. He was one of the main organiser of Polish scouting in the Prussian partition of Poland.