Daniel (Hebrew: דָּנִיֵּאל, Modern Daniyyel Tiberian Dāniyyêl ; Arabic: دانيال, meaning in Hebrew "God is my Judge") is the protagonist in the Book of Daniel of the Hebrew Bible. In the narrative, when Daniel was a young man, he was taken into Babylonian captivity where he was educated in Chaldean thought. However, he never converted to Neo-Babylonian ways. By Divine Wisdom from his God, Yahweh, he interpreted dreams and visions of kings, thus becoming a prominent figure in the court of Babylon. Eventually, he had apocalyptic visions of his own that have been interpreted as the Four monarchies. Some of the most famous tales of Daniel are: Shadrach, Meshach, and Abednego, The writing on the wall and Daniel in the lions' den.

In the third year of the reign of Jehoiakim (BC 606), Daniel and his friends Hananiah, Mishael, and Azariah were among the young Jewish nobility carried off to Babylon. The four were chosen for their intellect and beauty to be trained as advisors to the Babylonian court,(Daniel 1) Daniel was given the name Belteshazzar, i.e., prince of Bel, or Bel protect the king!(not to be confused with the neo-Babylonian king, Belshazzar). Hananiah, Mishael, and Azariah were given the Babylonian names, Shadrach, Meshach, and Abednego, respectively.

Yuli Markovich Daniel (Russian: Ю́лий Ма́ркович Даниэ́ль [] ( listen); November 15, 1925 — December 30, 1988) was a Soviet dissident writer, poet, translator, and political prisoner. He frequently wrote under the pseudonyms Nikolay Arzhak (Николай Аржак [] ( listen)) and Yu. Petrov (Ю.Петров [] ( listen)).

Yuli Daniel was born in Moscow into the family of Yiddish playwright M. Daniel (Mark Meyerovich, Russian: Марк Наумович Меерович), who took the pseudonym Daniel. The famous march song of the Soviet young pioneers, "Орленок" (Young Eagle), was originally written for one of his plays. Daniel's uncle, an ardent revolutionary (alias Liberten), was a member of Comintern who perished in the Great Purge.

In 1942, during World War II, Daniel lied about his age and volunteered to serve at the front. He fought in the 2nd Ukrainian and the 3rd Belorussian fronts, in 1944 was critically wounded in his legs and demobilized due to his resultant disability.

In 1950, he graduated from Moscow Pedagogical Institute and worked as a school teacher in Kaluga and Moscow regions. He published his poetry translations from a variety of languages. Daniel and his friend Andrei Sinyavsky also wrote satirical novels and smuggled them to France to be published under pseudonyms. (See samizdat)