Inoichi Yamanaka is a Jonin from Konohagakure, and alongside Shikaku Nara and Choza Akimichi, he is a part of the first Ino-Shika-Cho trio.

He is a member of the Yamanaka clan and owns the Yamanaka flower shop along with his daughter Ino Yamanaka. Inoichi is a member of the Ino-Shika-Cho trio, which consists of three Jonin from the Yamanaka clan, the Nara clan, and the Akimichi Clan, respectively. His daughter, Ino, is a member of her own Ino-Shika-Cho, judging that their fathers were once team-mates themselves in their early days as ninja.

Inoichi, presumably the head of the Yamanaka clan, has shown himself to be a highly capable ninja. He is well-versed in all of his clan's secret techniques. During the Invasion of Konoha in Part I, Inoichi skilfully performs the Mind Body Disturbance Technique to make the invaders he encounters fight against their own allies without any self-control. Further proof of his skill was shown from his status as an interrogator during Pain's invasion. He was able to skilfully probe the mind of one Pain's Amegakure loyalist's, able to perceive a person's entire day of memories in under a minute, even though Pain had guarded it with mental blocks and traps. He has also shown the ability to communicate telepathically with his daughter, Ino.

He is also skilled at tracking targets through their chakra trail, as long as the target's chakra signature stays the same.

Techniques:
* Chakra Sensing Technique (Manga only)
* Formation Ino-Shika-Chō
* Mind Body Disturbance Technique
* Mind Reading
* Yamanaka Clan Telepathy