What do you need Cantonese pinyin for? actually Cantonese users do not usually learn pinyin, even for the native ones. many of us type Chinese words using 倉頡(typing Chinese characters by strokes and shapes) instead of using pinyin(sound of characters) But still there are many websites for studying Cantonese pinyin http://arts.cuhk.edu.hk/Lexis/Canton2/ this is made by one of the best university in Hong Kong.

cantonese is a dialect,the pronunciation is different from Mandarin，so there it not very exactly pinyin method for Cantonese，i think ，if u can not use wp well，maybe use Mandarin will be better.

oh, here are some sites you can study more about cantonese pinyin. yes, i'm ensure you again, there are some method exist even computer input too. http://en.wikipedia.org/wiki/Jyutping input: http://cpime.hk/?language=english have fun and goodluck !

okay listen, sofar, there are some pinyin method to write cantonese. i used to have one book, that esp teaching cantonese pinyin, but i don't remember the books name. well, itz published by beijing cultural institute (something). okay. for me i never learn the pinyin, but i don't have problem neither to communicate with friends when it come to neccessary! what i did is very simble, i use my little knowledge of english, and chinese pinyin to form the sounds up ! Nei meng hmm meng ah? gam! sin nin fai lok , ngo gay pang-yao!

Essentially you are correct Elliot, however I am told that Educational institutes in China amd HK have a preferred style of Romanisation. I was hoping to fast track my search with the question.