Jon's rhymes with:
azerbaijan's, jahns, john's, johns, st-johns, afrikaans, alphonse, azerbaijan's, batons, bonn's, brons, bronze, come-ons, cons, don's, dons, donze, fons, fonz, goings-ons, han's, hons, hwan's, jahns, john's, johns, kahan's, kahn's, kazakhstan's, khan's, konz, lat-lons, lian's, livan's, lons, milan's, nithuekan's, omans, ons, pons, put-ons, ron's, run-ons, saint-saens, salons, schons, sohns, sons', spawns, st-johns, swann's, swans, taiwan's, teheran's, teherans, tehran's, tehrans, try-ons, vons, yuan's, yvonne's
Jon's sounds like:
jacking, jackson's, jacksonians, jacksons, jaenicke, jahnke, jahns, jaime's, jaimes, jam's, jamaica, jamaica's, james, james', james's, jamesway, jamie's, jamming, jammu's, jams, jan's, janacek, janachowski, janak, janas, janca, janco, janczak, jane's, janecek, janeczko, janek, janes, jang, janiak, janice, janicek, janick, janicke, janicki, janiga, janik, janikowski, janis, janisch, janish, janiszewski, jank, janka, janke, jankiewicz, janko, jankowiak, jankowski, janning, jannock, janos, janosik, janoski, janosko, janosky, janousek, janowiak, janowicz, janowski, jans, jansa, jansky, janus, janusz, januszewski, janz, jasinowski, jasinski, jason's, jaymes, jaynes, jean's, jeanes, jeans, jem's, jencks, jenks, jenn's, jenness, jenning, jennings, jenny's, jens, jeong, jewishness, jiang, jiang's, jiangsu, jim's, jimenez, jiminez, jimmy's, jines, jing, jinks, jinx, joachim's, joachims, jockeying, joens, jogging, johannes, johanning, johanns, john's, johnnie's, johnny's, johns, johns's, johnsey, joines, joining, joins, jokhang, joking, jonas, joncas, jones, jones', jones's, joneses, jong, joong, joying, joynes, juang, juhnke, jumanji, junco, june's, junejo, junek, junes, jung, jung's, junge, junius, junji, junk, junkie, junkies, junky, juno's, jynx