There are many clans in existence for power or carrying the name of their ancestors. The Kaguya Clan are greedy people with advance bloodline who thirst for killing while the Uchiha, Akimichi, Aburame, and Hyuga Clan have advance bloodline limits that are carry down from their ancestors and are peaceful clan. Other include the Fuma Clan, Wasabi Clan, and Wagarashi Clan. There are many clans but some are extinct.

Uchiha Clan

Uchiha Clan Uchiha: Fan
Village: Hidden Leaf Village
Country: Fire Country
Status: Gone (2 survivors)
Bloodline: Sharingan

The Uchiha Clan is the most well known and most powerful of clans. They are based in the Leaf Village. Their traditional clothing consist of a fan (clan logo) on their back clothes. Their clothes are rather dark in color, high neck shirt and long hair. They are small individual who carried an Bloodline, called the Sharingan. The Sharingan is able to replicate any ninjutsu and taijutsu once it has copied it. The clan secret meeting place is located in the main temple of the Nakano Shrine, underneath the 7th tatami (from top) mat on the far right side. Also found in here is the family secret, the Uchiha eye technique, Mangekyou Sharingan. They head the Konoha Police Force. They have a special tribute, that when an Uchiha has master the Katon: Goukakyuu no Jutsu (subject to change), that individual is no longer consider an child but an adult. This is a very peaceful clan with no war history with any villages or clans or political affair. But one evening, the clan was wiped out by an ANBU Captain, Uchiha Itachi, also part of the Uchiha Clan. There are only 2 survivors of the clan, Itachi and Sasuke.

Note: According to the back-flash, we found out that only the male seems to carry this ability. No female is seen to have this ability.
Note: To possess the Mangekyou Sharingan, an Uchiha must kill his/her best friend. Only 2 have this eye technique. What they literally mean by best friend is not certain.

Kaguya Clan

Kaguya Clan Village: Hidden Mist Village
Country: Mist Country
Status: Extinct
Bloodline: Bone Manipulation

The Kaguya Clan was considered warmongers. They hate peaceful villages and countries. They are people who would start a war with any village or countries than to work it out politically. Their existence is to constantly fight and ease their pain. Their traditional clothing consist of a long velvet shirt and pant. Their hair is tied into 2 ball like pig-tail. One year they started a war against the Village of the Mist, knowing fully that they were outnumber in size, men, and power. Their blood thirst for battle cost everyone in clan their life except one, Kimimaro. Until recently, the Kaguya Clan is no more. Kimimaro's death brought an end to their existence. The clan is known for their ability to manipulate bones to their desirability. They can create more than the 206 bones found in a regular human beings.

Note: According to the back-flash, we found out that only Kimimaru possess this ability. No other members showed this ability during the battle.

Aburame Clan

Aburame Clan Village: Hidden Leaf Village
Country: Fire Country
Status: Active
Ability: Controlling Bugs

The Aburame Clan is rather quiet about their existence. They have the special ability to communicate and control bugs. They control bugs with their mind. Apparently their anatomy also consist of bugs. They are able to produce bugs at any time. The newborn is given up to the Kikari, or destruction bug. Both benefits from the ritual, the Kikai receives chakra as food while the newborn receives the bugs for protection and combat. The Aburame Clan is not known for their ability to do hand combats or any special jutsu. Rather, they have their bugs friends to fight for them in battle. Their traditional clothing consist of a big jacket that extend up passed their nostril. They always wear sunglasses.

Akimichi Clan

Akimichi Clan Village: Hidden Leaf Village
Country: Fire Country
Status: Active
Ability: Super-size

The Akimichi Clan is a small clan but are big in size. Their special ability is to super-size any parts of their body, whether it's the arms, legs, or just their head. We only get to see 2 members of this clan but we may conclude that every members is large in size. Their other ability is the Meat Tank, it which they roll themselves up like a meat ball and roll at great speed. They have the appetite for junk food, chips and candies. Their trump card or forbidden weapon is the Blue Pill, Yellow Pill, and Red Pill. It is only to be use as the last resort because it will cause the body harm and possible death.

Hyuga Clan

Hyuuga Clan Village: Hidden Leaf Village
Country: Fire Country
Status: Active
Bloodline: Byakugan

The Hyuga Clan consist of the Head Family and Branch Family. The first born of the Head Family will take the title as the "Head Family". The second born of the Head Family will take the title as the "Branch Family". Any child of the Branch Family will remain secondary to the Head Family. The Head Family is the one to carry on the secret of the Byakugan and the Branch Family is the one to protect it. The Branch Family is given the Curse Seal (X) at age 3 to insure their loytitley. The Head Family is able to control the magnitude of the Curse Seal with a simple hand seal. When a person with the curse seal dies, their Ability dies with them. Hizashi always held a grudge against his older twin brother, Hiashi, because he is not the Head Family. Because the Head and Branch never see eye to eye, only the Head Family children are able to fully master the Byakugan and the Branch is seen as the weakling. An incident happen when one Cloud Village ninja was killed by Hiashi for wanting to steal the family secret. Hiashi wanted give up his life to save the secret but the higher authority suggested Hizashi, with his consent. Hizashi dead because it was his will to do so and to protect his family and friends, not to protect the secret of the Hyuga Clan. Another taijutsu is known as the gentle fist.

Note: Hand Seal to control Curse Seal: index & middle finger point up while the ring and pinky fingers are rolled inward with the thumb over them. Neji has always blamed Hiashi for his father's death but after reading his father's statement, he realized that his father's choice to die for the sake of protecting the Head and Branch Family.