Riemann rhymes with:
dreman, freeman, freemon, frieman, rieman, spreeman, beaman, beamon, beeman, beman, daemon, deman, demon, dreman, eamon, fleeman, freeman, freemon, frieman, heman, kleeman, leaman, leamon, leeman, leemon, lehman, leman, mckeeman, neeman, neiman, nieman, niemann, rieman, schiemann, schneeman, seaman, seamen, seamon, seeman, seemann, seman, semen, siemon, sleeman, spreeman, thieman, thiemann, tieman, tiemann, wieman, wiemann, yeaman, zeeman, zeman, zieman, ziemann
Riemann sounds like:
raheem, rahim, rahm, rahman, rahn, raimo, rain, raina, raine, rainey, rainie, rainman, rainone, rainy, ram, rama, raman, ramey, rami, ramm, ramo, ramon, ramona, ramone, ramu, ramune, ran, rana, ranee, raney, ranh, rani, rania, rann, ranney, rannow, ranum, rauen, raum, raun, rayman, raymo, rayne, rayno, rayon, ream, reamy, reaney, rearm, reaume, reen, rehm, rehman, rehmann, rehn, reim, reiman, reimann, rein, reina, reine, reiney, rem, remain, remi, remme, remmy, remo, remy, ren, rena, rename, renamo, rene, reneau, renee, renehan, renew, renin, renn, renna, renne, rennie, renno, renny, reno, renown, reny, rerun, reum, reunion, reyman, reyna, rhame, rheaume, rheem, rhein, rhem, rhin, rhine, rhineman, rhino, rhome, rhone, rhoney, rhyme, rhyne, riehm, rieman, rihn, rim, rima, rina, rine, riney, rini, rinn, rinne, rion, roam, roan, roane, roanna, roehm, roen, rohan, rohana, rohm, rohman, rohn, rohrman, rom, roma, romain, romaine, roman, romani, romania, romanian, romann, romano, romanone, romanow, romany, rome, romeo, romey, romina, romine, romm, romney, romo, ron, rona, ronan, ronayne, rone, ronen, roney, roni, ronin, ronna, ronne, ronnie, ronny, room, roome, roomy, roone, rooney, rouyn, rowaine, rowan, rowen, rowena, rowin, rowney, rowny, ruam, ruane, ruano, ruhnau, ruin, rum, ruman, rumania, rumanian, rumen, rumina, rummy, rumney, run, run-on, runaway, rune, runion, runnin', runnion, runny, runway, runyan, runyon, ryan, ryen, ryman, ryno, ryon