#2. Rose Namajunas
It may seem odd to rank Rose Namajunas ahead of the current UFC strawweight champion given that Carla Esparza has defeated her on two separate occasions. However, Namajunas has the same number of title reigns and has two more successful title defenses which secures her the No.2 spot on this list.
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After falling to Esparza in her first title fight, Namajunas defeated Joanna Jedrzejczyk to begin her first stint with the belt. She then successfully defended her title in the rematch before losing it to Jessica Andrade. It was a rather brutal loss for Namajunas as she suffered a vicious knockout after being slammed to the mat by Andrade.
Namajunas later defeated Andrade to earn another shot at UFC gold and went on to defeat Weili Zhang in two consecutive fights. This saw her win the belt for the second time and pick up another successful title defense. While she's now lost the championship, she still remains at the top of the strawweight division.
#1. Joanna Jedrzejczyk - UFC strawweight champion with longest reign
As with the previous entry, it might seem odd to place Joanna Jedrzejczyk above Rose Namajunas given that she's lost to her on two occasions. However, in a division where each of these fighters have beaten one another, Jedrzejczyk stands out as the only champion with a lengthy title reign.
Jedrzejczyk's lone run with the belt began back in March 2015 and is comfortably the longest in the division's history, spanning all the way until November 2017. She then lost two fights to Namajunas before rebounding and challenging Valentina Shevchenko for flyweight gold in a losing effort.
After returning to strawweight, she came agonizingly close to a second championship victory in her legendary split decision loss to Weili Zhang. With these two set to rematch and the winner to face Esparza, perhaps Jedrzejczyk could soon win gold again and cement her spot as the strawweight GOAT.