Unit Structures is a studio album by American jazz pianist Cecil Taylor, released in October 1966 by Blue Note Records.

[5] Jesse Jarnow of Pitchfork described Unit Structures as "among the most intense of the early free jazz albums".

[6] The album was accompanied with an essay written by Taylor entitled "Sound Structure of Subculture Becoming Major Breath/Naked Fire Gesture".

[7] AllMusic gave the album five stars, with reviewer Scott Yanow opining that "Taylor's high-energy atonalism fit in well with the free jazz of the period but he was actually leading the way rather than being part of a movement...it could be safely argued that no jazz music of the era approached the ferocity and intensity of Cecil Taylor's".

[2] The Penguin Guide to Jazz awarded it three and a half stars of a possible four, writing: "Unit Structures is both as mathematically complex as its title suggests and as rich in colour and sound as the ensemble proposes, with the orchestrally varied sounds of the two bassists — Grimes a strong, elemental driving force, Silva tonally fugitive and mysterious — while Stevens and McIntyre add other hues and Lyons improvises with and against them.