Martens's rhymes with:
allianz's, dickens's, evans's, givens's, lyons's, owens's, pickens's, robins's, rothmans's, simmons's, summonses, winans's
Martens's sounds like:
maertens, maradona's, maradonna's, marathons, marauding, maritimes, martens, martians, martin's, martinec, martinek, martines, martinez, martinez's, marting, martinique, martinis, martinka, martinko, martins, martins's, mehrtens, meridian's, meriting, mertens, mertins, mortems, morton's