Amos Bar (Hebrew: עמוס בר) (October 15, 1931 – March 15, 2011), also known as "Possa", was an Israeli author, teacher, and editor.

Amos Bar was born to Sarah and Pinhas Barber in moshav Tel Adashim, in the Jezreel Valley, Israel.

After graduating from the kibbutz seminary college and from Tel Aviv University, he was a teacher and an educator for many years.

Throughout the last two decades of his life he lived with his family in an Israeli community village, and held educational sessions with children and teenagers throughout Israel.

Amos Bar's books are inspired by his childhood experiences in the Land of Israel, its landscapes, and animals.