A method to determine iodide in infant formula samples by indirect atomic absorption spectrometry (IAAS) was developed. The iodide in solution resulting from an alkaline digestion (Na 2 CO 3 -NaOH) of the sample is precipitated with silver; the precipitate is redissolved by adding cyanide solution, and this solution is subjected to GF-AAS. Temperatures of 1000 and 2100 o C were selected for the ashing and atomization steps, respectively, using a mixture of Pd and Mg(NO 3 ) 2 as a matrix modifier (at concentrations of 36 and 16 μg ml - 1 , respectively). The sensitivity, LOD, LOQ and characteristic mass obtained were, respectively, 1.12x10 - 2 l μg - 1 , 3.1 μg g - 1 and 10.4 μg g - 1 and 7.3 pg, referred to sample. The linear interval of concentrations extends up to 10 μg l - 1 of iodide, with no need to use the standard addition method; the mean R.S.D. of data within this range is 3.4%, with 2.9% over the whole procedure. No interfering effects were observed among the foreign ions studied, and 100.0% was the mean analytical recovery achieved within the linear range of concentrations. The application of the method to seven real samples gave a mean content of 12.8 μg g - 1 of iodide, as well as less than 3.1 μg g - 1 in eight other samples.