Reacting stoichiometric amounts of 1-(diphenylphosphino)ferrocenecarboxylic acid and [Ti(eta(5)-C(5)HMe(4))(2)(eta(2)-Me(3)SiC[triple-bond]CSiMe(3))] produced the title carboxylatotitanocene complex, [[mu-1kappa(2)O,O':2(eta(5))-C(5)H(4)CO(2)][2(eta(5))-C(5)H(4)P(C(6)H(5))(2)][1(eta(5))-C(5)H(CH(3))(4)](2)Fe(II)Ti(III)] or [FeTi(C(9)H(13))(2)(C(6)H(4)O(2))(C(17)H(14)P)]. The angle subtended by the Ti/O/O' plane, where O and O' are the donor atoms of the kappa(2)-carboxylate group, and the plane of the carboxyl-substituted ferrocene cyclopentadienyl is 24.93(6) degree.