Daniel Omielańczuk (born August 31, 1982) is a Polish professional mixed martial artist and kickboxer currently competing in the heavyweight division of Konfrontacja Sztuk Walki (KSW).

A professional MMA competitor since 2009, he has competed for the UFC, Absolute Championship Akhmat, and Konfrontacja Sztuk Walki.

[2] Omielańczuk 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.

[3] Omielańczuk made his promotional debut against fellow newcomer Nandor Guelmino on September 21, 2013, at UFC 165.

[12] However, Erokhin pulled out of the fight in late June citing an injury and was replaced by promotional newcomer Chris de la Rocha.

[15] He won the fight via technical majority decision after Danho was hit with an inadvertent groin strike in the third round that rendered him unable to continue.

He later signed with Absolute Championship Berkut, competing against American Bobby Brents at ACB 83: Baku in 2018.

After picking up a unanimous decision win in the regional kickboxing circuit, Omielanczuk returned to MMA to face Amir Aliakbari at ACB 89: Krasnodar in September 2018.

[31] Omielańczuk faced Michał Kita on February 25, 2023, at KSW 79, losing the bout via ground and pound TKO in the third round.