Daniel Jacobs or Dan Jacobs may refer to:

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.

Dmitry Pirog (born June 27, 1980 in Temryuk, Russia) is a Russian boxer in the Middleweight division and the current WBO Middleweight Champion.

Dmitry used to be a chess player and wasn’t getting enough activity, so he decided to start boxing. He had over 230 amateur fights, winning several Russian National Amateur Championships.

The undefeated Pirog was relatively unknown going into the bout with Jacobs, with his biggest win prior to the bout being over former contender Kofi Jantuah.

On July 31, 2010 Pirog fought Middleweight contender, Daniel Jacobs for the vacant WBO Middleweight Championship. Pirog shockingly upset Jacobs via knockout with a hard right hand in the 5th round to win the title, on the Juan Manuel Marquez vs. Juan Diaz II undercard.

Pirog is a graduate of Kuban State University and holds a Managerial boxing license. Some of the boxers he manages are undefeated prospects Fedor Papazov and Light Heavyweight Vasily Lepikhin.