The title complex, [Al(2)(CH(3))(4)(C(13)H(10)N(3)O)(2)], is dimeric, bridged through the O atoms of the phenolate anions. The asymmetric unit contains one half of the mol-ecule and there is a crystallographic inversion centre in this mol-ecule. Each Al atom is penta-coordinated by one N atom and two bridging O atoms of two N,O-bidentate benzotriazolylphenolate ligands and by two C atoms from two methyl groups, forming a distorted trigonal-bipyramidal environment.