Karate: Karate is a Japanese martial art that focuses on strikes with hands and feet, as well as blocking techniques. It originated in Okinawa and later became popular worldwide. Karate promotes physical fitness, self-control, and discipline.

Taekwondo: Taekwondo is a Korean martial art known for its fast kicks and agile movements. It has become an Olympic sport and is popular among people of all ages. Taekwondo also teaches the virtue of self-discipline and respect.

Brazilian Jiu-Jitsu (BJJ): BJJ is a martial art that focuses on ground fighting techniques, with an emphasis on grappling, joint locks, and chokes. It evolved from Japanese jiu-jitsu and has become a key component of combat sports such as MMA. BJJ emphasizes tactics, patience, and control.

Muay Thai: Muay Thai, also known as Thai boxing, is a martial art from Thailand that focuses on strikes with fists, feet, elbows, and knees. This art combines technique with physical endurance and mental strength.

Kickboxing: Kickboxing combines boxing techniques with kicks. There are various variants, but overall, kickboxing promotes strength, agility, and speed. It is popular as both a sport and a form of physical exercise.

Judo: Judo is a Japanese martial art that focuses on throws and ground fighting. It evolved from traditional jiu-jitsu and has become an Olympic sport. Judo teaches technique, balance, and respect.

Kung Fu/Wushu: Kung Fu, also known as Wushu, encompasses various Chinese martial arts, each with its own style and techniques. Kung Fu promotes flexibility, coordination, and spiritual development.

Boxing: Boxing is a sport where fighters compete using only punches, with the aim of defeating their opponent by striking the upper body or head. It is popular due to its simplicity and the excitement it provides.

Krav Maga: Krav Maga is an Israeli martial art developed for self-defense purposes. It combines striking, grappling, and defense against weapons techniques. Krav Maga focuses on practicality and quick reaction in stressful situations.

Aikido: Aikido is a Japanese martial art based on avoiding attacks and using the opponent's energy for control and throws. Aikido promotes harmony, peace, and nonviolent conflict resolution.

Note: The popularity of martial arts may vary depending on the region, culture, and other factors. This list provides a general overview of some of the most well-known martial arts worldwide.