Using the batch method, the retention of Ga(III) from HCl solutions by two gel-type pyridine strong-base anion exchangers containing 1-methyl- or 1-butyl-4-vinylpyridinium chloride structural units, called S-1 and S-2 resins, respectively, was studied. The influence of the HCl and Ga(III) concentrations as well as of the contact time between the resin and the liquid phase was investigated. The parameters, which characterize the retention process, were estimated using Langmuir and Freundlich isotherms. Both resins exhibited a higher affinity for gallium ions from a 6M HCl solution. According to Langmuir isotherms, maximum retention capacities of 44.44 and 60 mg Ga(III)/g dry resin for the S-1 and S-2 resins, respectively, were obtained. Freundlich isotherms provide additional proof for a higher affinity of the S-2 resin for Ga(III) from HCl solutions. It is clear that the substituent length increase on N+ atoms led to an increasing affinity of the pyridine strong base anion exchangers toward Ga(III).