Chakra Absorption Techniques (チャクラ吸引術, Chakura Kyūin Jutsu; English TV "Chakra Absorption Jutsu") are techniques that allow the user to absorb another individual's chakra. They are typically used to absorb chakra from an opponent and add it to the user's own chakra reserves, allowing them to utilise it as if it were their own, while simultaneously exhausting the opponent's physical energy and limiting the techniques that they can perform.
Some ninja, such as Yoroi Akadō, Jirōbō, Kisame Hoshigaki, Orochimaru, Black and White Zetsu, Madara Uchiha, Fūka and the Ultimate Summoning Beast are able to use this technique by merely coming into contact with an opponent, while most ninja require a medium to absorb chakra through (such as the Aburame clan's kikaichū feeding on the chakra of their hosts and opponents). However, Orochimaru only retrieved his own chakra that was in Kabuto.
Certain weapons can also take chakra from the opponents and share it with its wielder. A prominent example is the great blade Samehada, which can use the absorbed chakra as a means of healing the user's stamina and injuries when necessary. The anime and movies also show tools that can absorb chakra: Yukigakure's Chakra Armour, Takumi Village's Infinite Armour, and Mukade's combined puppets. The video games include the Dragon Blade weapon.
The Wood Release kekkei genkai also has the ability to suppress and absorb regular chakra and tailed beast chakra via the Wood Release: Foo Dog Heads and Wood Dragon. Yamato has also used this to suppress the chakra of a non-jinchūriki as he did with Kisame Hoshigaki. In the Naruto Shippūden the Movie: The Will of Fire, Hiruko used his Chimera Technique, which allowed him and his subordinates to assimilate the bodies and chakra of others with themselves; Hiruko in turn gained the additional usage of Dark Release to deconstruct and absorb chakra from enemy techniques, and the Storm Release Secret Technique: Demon Dragon Storm to absorb chakra via special thunderstorm clouds.
- In reference to Yoroi's use of the ability, Orochimaru describes it as "unholy" but never goes into detail.
- In Naruto Shippūden 3D: The New Era, the Rinha clan had a kekkei genkai allowing them to absorb chakra and then imbue a puppet with the chakra, even giving it the ability to use other kekkei genkai.