Martha Pearson Smith (pen names, Mattie May, May, Mattie; September 29, 1836 - 1912) was an American poet and musician. She made significant contributions in secular and sacred verse. One of her best songs was "Jennie and I", which was set to music by Prof. T. M. Towne. She was a champion of the cause of temperance and did much to advance the movement in Minnesota.