I can't find anywhere that the ASX gives their full list including tradeable options but I wrote a program to hunt for them. I took the base stock codes and added O, OA, OB etc and here's what I found. I think some of
@winnetwo's codes have changed and some have definitely expired but it's a very useful list because it has exercise prices, which are hard to find.
These ones should all be valid as at 10th Sep 2021:
2BEO, AAUOB, ADOOA, AGEOB, AGRO, AGYO, AJMOB, AJQOA, AKNO, ALBO, ALTOB, ANLOA, AQDOC, ARDOA, ARNO, ASNOC, ATCOB, AUKO, AV1O, AVEO, AVLOA, AVRO, AVWO, AWJO, AZIO, BASO, BATO, BCNOB, BD1O, BEEO, BLYO, BLZO, BNRO, BOAOA, BPHOA, BPMO, BRKOB, BRVO, BUDOA, BYHOA, CADOA, CCZO, CCZOA, CCZOB, CDXO, CDYOA, CG1O, CHKOA, CL8OB, CLBO, CLZOA, CPHOA, CPTOB, CROO, CVSO, CYLOA, CYQOA, CZLOB, CZNO, DDDOA, DGRO, DORO, DW8O, DXNOD, DYLO, ECTOE, EDEO, EFEOA, ELSOA, ENXOA, ERWO, ESHOA, ESROA, ESSO, EUROA, FAUOA, FFGOA, FFXOA, FGLOA, FGXO, FHSO, FIJO, FINOA, FNPO, FRXO, G88O, GBZOB, GEVOA, GLVO, GMNOA, GNMOA, GNMOB, GNMOF, GSNOA, GWROA, HASO, HE8OA, HYDO, IBXO, IBXOA, ICGOA, ICGOC, ICIOA, ICIOB, IMUOB, IMUOC, IMUOD, INYO, KAIOG, KFEOA, KPOOE, KRROC, LIOO, LOMOC, LPDOB, LPDOC, LPDOD, LRSOC, MATO, MAYO, MCTO, MEBOB, MEBOC, MFFOA, MGFO, MGTOD, MGUO, MHCO, MLMOB, MLSOB, MM8O, MNBOA, MOHO, MRDOB, MRQOC, MSMOC, MTBO, MXOOA, MXROD, NACOA, NC6OA, NESO, NESOA, NOROC, NOXO, NOXOA, NPMO, NSCOA, NTLOB, NWEOB, NZSOA, OARO, OAROC, OKJO, OKRO, PABO, PABOA, PBHO, PDIOA, PEKOD, PGDO, PICOA, PRMOB, PSLOD, PTXOC, PUAOD, PUROA, PVLO, RAGOC, RFRO, RGIO, RGIOA, RGIOB, RLGO, RMLOA, RMLOB, RNEO, RNUOB, ROOO, RYDOA, SBRO, SGCOA, SHOO, SHPO, SI6OD, SISO, SKNO, SRNOC, STKOA, SUDOE, SYAOC, SYAOD, SYTOA, TASOE, TEGO, THROA, TMGO, TMGOA, TMGOB, TMSO, TMZO, TNGOB, TNRO, TONOE, TSCOA, TSLO, TTBO, TYMO, TYXOC, UUVOA, VALOB, VICO, VTIOA, WAAOA, WBTOA, WCNOE, WFLO, WGBO, WMLOA, WMLOB, WMLOC, WNXO, WQGOA, WRMO, WRMOA, WWIO, XTCO, YPBOB, ZAGO, ZMMOC