Kickboxing weight classes are weight classes that pertain to the sport of kickboxing. Organizations will often adopt their own rules for weight limits, causing ambiguity in the sport regarding how a weight class should be defined. For a variety of reasons (largely historical), weight classes of the same name can be of vastly different weights. For example, a boxing middleweight weighs up to 72 kg (160 lb), an ISKA middleweight upper limit is 75 kg (165 lb), and a K-1 middleweight upper limit is 70 kg (154 lb).

Comparison of organizations

This table gives names and limits recognised by the widely regarded sanctioning bodies and promotions in professional kickboxing, Muay Thai and shoot boxing.

AJKF

The (now defunct) All Japan Kickboxing Federation (AJKF) utilized the following weight classes:

Enfusion

Enfusion utilizes the following weight classes:

Glory

Glory utilizes the following weight classes:

IKF

The International Kickboxing Federation (IKF) utilizes the following weight classes:

ISKA

The International Sport Kickboxing Association (ISKA) utilizes the following weight classes:

It's Showtime

It's Showtime (now defunct) utilized the following weight classes:

K-1

K-1 utilizes the following weight classes:

K-1 JAPAN

K-1 Japan Group utilizes the following weight classes:

KOK

King of Kings (KOK) utilizes the following weight classes:

Krush

Krush utilizes the following weight classes:

Kunlun Fight

Kunlun Fight utilizes the following weight classes:

MAJKF

The Martial Arts Japan Kickboxing Federation (MAJKF) utilizes the following weight classes:

NJKF

The New Japan Kickboxing Federation (NJKF) utilizes the following weight classes:

PKA

The (now defunct) Professional Karate Association (PKA) utilized the following weight classes:

ONE Championship

The ONE Championship utilizes the following weight classes:

RISE

Real Impact Sports Entertainment (RISE) utilizes the following weight classes:

Shoot Boxing

The Shoot Boxing utilizes the following weight classes:

Superkombat

Superkombat Fighting Championship utilizes the following weight classes:

Superleague

Superleague utilizes the following weight classes:

Thai Stadiums

WAKO

The World Association of Kickboxing Organizations (WAKO) utilizes the following weight classes:

WBC Muaythai

The World Boxing Council Muaythai (WBC Muaythai) utilizes the following weight classes:

WFCA

The World Full Contact Association (WFCA) utilizes the following weight classes:

WKA

The World Kickboxing Association (WKA) utilizes the following weight classes for both amateur and professional competitions:

WKN

The World Kickboxing Network (WKN) utilizes the following weight classes:

WMC

The World Muaythai Council (WMC) utilizes the following weight classes:

WPMF

The World Professional Muaythai Federation (WPMF) utilizes the following weight classes: