The sites that doped divalent Eu ions occupy in BaMgAl10O17 were studied by X-ray absorption fine structure (XAFS) measurement. The radial structural function and the Fourier-filtered EXAFS wiggle derived from the observed XAFS spectrum suggested that Eu ions occupy the Beevers-Ross and/or anti-Beevers-Ross sites. Observed XANES spectrum also could be explained by Beevers-Ross site occupation.