Rabbi Eliezer Papo (1785–1828) was the rabbi of the community of Silistra in Bulgaria (then part of the Ottoman Empire). He is famous for writing the Pele Yoetz, a work of musar (ethical) literature which gives advice on how to behave as a Jew in many aspects of life.
He authored the Pele Yoetz, his most famous work, as well as Eleph Hamogein, Oros Eilim, Chesed L'Alophim (on the Orach Chaim), Yaalzu Chasidim (on Sefer Chasidim), and Chodesh HaAviv.
One of his noted works is Beit Tefillah, which is filled with many different prayers for specific situations, including one for the welfare of the Jewish people. A Ladino edition was published in the 1860s, and a Hebrew version was printed in Jerusalem in 1968 (There were some additional, newer printings since).