Agnes Charlotte Dagmar Adler, born Hansen (19 February 1865 in Copenhagen – 11 October 1935 at the same place[1] was a Danish pianist.

The first time she played in public was a concert at the Student's Ballroom Festival with her father and brother in 1873.

Agnes received private tuition from Edmund Neupert, before she, in 1879, was admitted to the Royal Danish Academy of Music on a scholarship.

She made her debut there in 1882 by playing Mendelssohn's piano concerto conducted by Niels W. Gade, of the Music Society.

She was also part of the Agnes Adler trio with Peder Møller (Violin) and Louis Jensen (Cello).