Mainly BBL (Bualuang), SCB, UOB, Eastspring. There are loads of other investment brokers, but I was just lazy as I already bank with the first three. Having said that, the vast majority (85-90%) of the mutuals I hold are in overseas based masterfunds, e.g. I hold B-Innotech with Bualuang, where the master fund is "Fidelity Funds - Global Technology Fund, Class YACC-USD", SCBS&P500E (master fundiShares Core S&P 500 ETF. Doing it my way increases the expenses, so investing directly would be more cost effective. Luckily, there are now options available to invest directly in the master funds from Thailand, I just have never got round to it.