If you are referring to Tamar who was a daughter-in-law and graddaughter-in-law of Jacob in Genesis then I'd say she was an Israelite. Hebrew, Jew and Israelite being interchangeable terms.
Jewish answer:
Our tradition is that Tamar was the daughter of Shem, born shortly before his death. She was pre-Hebrew and pre-Israelite. Because she and her father were servants of God (see Rashi commentary, Genesis ch.14) from the ancient tradition (one of the few tiny branches of mankind that never went over to idolatry), she was deemed worthy of marriage into Jacob's family.
Note that there is also a much later Tamar; a daughter of King David, who was Israelite.
Tamar Kaprelian's birth name is Mardirossian, Tamar.
Tamar Novas's birth name is Tamar Novas Pita.
Tamar davis is going to get married soon and tamar davis will have kids to
Tamar Simon Hoffs's birth name is Tamar Simon.
Brunel made the Tamar Bridge in Plymouth
Tamar's brother was Absalom
in the tamar valley
What is Tamar broxtons address
No, Tamar Braxton is not single.
Ein Tamar was created in 1982.
Tamar Frankel was born in 1925.
Tamar Abakelia was born in 1905.