The formation of the complex formed between 2-hydroxypyridine and ferric ion has been studied in weakly acidic aqueous solution. Prior to the acquisition of the data for this equilibrium study it was necessary to study the equilibrium for the protonation of 2-hydroxypyridine in aqueous solution. A pK value of 0.98 was obtained for the protonation reaction at unit ionic strength at 25°. The formation constant for the 1:1 complex formed by the displacement of hydrogen ion by ferric ion in 2-hydroxypyridine at 25° and unit ionic strength was found to be 5.6. This value is much higher than the corresponding constants for 3- and 4-hydroproxypyridines. This evidence strongly suggests that interaction between the ferric ion and both the oxygen and nitrogen centers in 2-hydroxypyridine enhances complex stability.