Who is the number 1 ranked boxer in the world?

As of October 2023, the number one ranked boxer in the world can vary depending on the weight class and the specific boxing organization (such as WBC, WBA, IBF, or WBO). Notable fighters who have held top rankings include Canelo Alvarez and Terence Crawford, among others. For the most current and specific rankings, it's best to check the latest updates from reputable boxing organizations or sports news sources.