Oltmann rhymes with:
holtman, holtmann, oltman, stoltman, woltman, altman, altmann, aultman, bultman, feltman, halteman, holtman, holtmann, hultman, oltman, stoltman, veltman, waltman, weltman, woltman
Oltmann sounds like:
oldani, olden, oldham, oldman, oltman