Yon rhymes with:
jaan, lian, lujan, tian, vivyan, xian, yohn, abidjan, abron, alcon, almazan, alon, antoine, aton, azerbaijan, balaban, baran, bataan, baton, bon, bonn, bonne, bronn, buisson, c'mon, caan, cadogan, ceylon, chiffon, chon, christiane, christianne, chuan, come-on, con, conn, cron, daane, dainippon, dejohn, denouement, dhaharan, dhahran, dohn, don, donn, dwan, eldon, elston, evonne, forgone, frohn, gabon, gaitan, galvan, gibran, gohn, goings-on, grandmaison, guei-yuan, guinan, haan, hahn, han, hassan, hohn, hon, honn, hron, huan, hwan, ilan, iran, irelan, jaan, javan, johan, john, jon, jonn, juan, juran, jwan, kahan, kahn, kazakhstan, khan, kohn, kon, koran, kron, kuan, kwan, kwon, lat-lon, lian, livan, lohn, lon, lujan, mak-kwan, maran, mcconn, milan, mohn, moldovan, monn, moseley-braun, napolitan, nilan, nippon, nithuekan, non, ocon, odds-on, oman, on, oran, orran, pecan, pon, pousson, pran, put-on, quon, rapprochement, rohn, ron, ronne, run-on, saigon, salon, san-juan, sanjuan, santistevan, schon, shon, sichuan, sohn, sonn, sonne, sorbonne, spahn, spawn, spohn, srinivasan, stephane, stjohn, st_john, swan, swann, taiwan, teheran, tehran, thereupon, thon, tian, tonn, toran, tron, try-on, upon, villagran, vivyan, wan, wann, whereupon, xan, xian, xuan, yaohan, yirng-an, yohn, yuan, yvonne, zhan
Yon sounds like:
yahn, yam, yamaha, yamane, yamani, yamin, yan, yaney, yani, yanni, yannone, yano, yanomami, yaohan, yaun, yawn, yeaman, yemen, yemeni, yen, yene, yeoman, yim, yin, yohn, yom, yona, yonan, yoneyama, yoon, youman, youn, younan, yuan, yuen, yum, yuma, yummy, yun