2‐Carboxyphenylacetate (cpa2−) and 1,2‐phenylenediacetate (1,2‐pda2−) have been reacted with uranyl cations under solvo‐hydrothermal conditions to generate six homo‐ or heterometallic complexes. Both [UO2(cpa)] (1) and [UO2(cpa)(phen)] (2), where phen is 1,10‐phenanthroline, crystallize as monoperiodic coordination polymers. [Ni(bipy)3][(UO2)2(cpa)3]⋅2.5H2O (3), is a diperiodic network with the hcb topology, in which the hexagonal cells distort to accommodate the counterions. [UO2(cpa)2Ni(R,S‐Me6cyclam)] (4) crystallizes as a heterometallic diperiodic network in which uranyl dicarboxylate chains are assembled by bridging NiII cations. While [dmaepH2][(UO2)2(1,2‐pda)3]⋅3H2O (5), where dmaep is 1,4‐bis(2′‐dimethylaminoethyl)piperazine, is a diperiodic hcb network, [QH]2[(UO2)2(1,2‐pda)3]⋅3CH3CN (6), where Q is quinuclidine, is the first example of a triperiodic framework in the uranyl–phenylenediacetate family, its topological type being bto. The complex involving the related ligand 1,4‐phenylenediacetate (1,4‐pda2–), [QH]2[(UO2)2(1,4‐pda)3]⋅2CH3CN (7), is a daisy‐chain‐like monoperiodic polymer. These and previously reported results are discussed in terms of ligand flexibility and ability to form large chelate rings.