UFC Fight Night: Bermudez vs. Korean Zombie (also known as UFC Fight Night 104) was a mixed martial arts event held by the Ultimate Fighting Championship on February 4, 2017, at Toyota Center in Houston, Texas.

A featherweight bout between Dennis Bermudez and former UFC Featherweight Championship challenger Chan Sung Jung served as the event headliner. This was Jung's first bout since August 2013, as he returned from military service.

A lightweight bout between Evan Dunham and Abel Trujillo was originally booked for UFC Fight Night: Poirier vs. Johnson. However, Trujillo pulled out due to an undisclosed injury. The fight was later rescheduled for this event.

A women's strawweight bout between Jéssica Andrade and Invicta FC Strawweight Champion Angela Hill was briefly linked to UFC 207. However the fight never materialized for that event because of a rule in the UFC's anti-doping policy with USADA. Subsequently, Andrade was removed from that card with the pairing left intact and rescheduled to take place at this event.

On January 19, the card suffered multiple changes due to injury: Evan Dunham and Johnny Case pulled out of their respective fights against Abel Trujillo and James Vick. Subsequently, Trujillo and Vick were booked to face each other. Also, Sheldon Westcott was forced to withdraw from his bout against Alex Morono at the event. He was replaced by Niko Price.

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