Daniel Omielanczuk  is a Polish mixed martial artist who is currently signed with the UFC, competing in the Heavyweight division. A professional competitor since 2009, Omielanczuk has also formerly competed for KSW.

Omielanczuk made his professional debut in 2009, competing primarily in regional promotions across the Eastern Europe, including KSW, where he compiled a record of 15 - 3 before signing with the UFC in the spring of 2013.