* JPMorgan advising on Saudi Aramco listing - sources
* Saudi crown prince pushing economic change
* Other Gulf firms may also seek IPOs abroad
ABU DHABI, Nov 7 (Reuters) - JPMorgan is in early talks with Saudi Arabian companies about overseas listings, its investment bank chief said, raising the possibility that more firms could join oil giant Saudi Aramco <IPO-ARMO.SE> in seeking an international flotation.
JPMorgan is among the banks advising Aramco on an international public offering (IPO), sources have told Reuters.
Aramco's listing is part of economic reforms being pushed by Crown Prince Mohammed bin Salman, who wants to make the kingdom less reliant on oil and has been consolidating his power with sweeping arrests that officials say aim to end corruption.
"If you want these companies to grow, they must have access to international capital markets," Daniel Pinto, chief executive of JPMorgan's investment bank, told Reuters about the possibility of other Saudi international listings.
"Local companies have expressed interest to us. They are at a preliminary stage," he said in an interview in Abu Dhabi.
This was the first time an influential banker has said Saudi firms other than Aramco could seek IPOs overseas.
The Saudi government plans to sell about 5 percent of Aramco next year, a move that Saudi officials say could raise about $100 billion, making it the world's largest IPO.
Pinto declined to comment on the bank's role in the Aramco deal or to name other firms considering international listings.
JPMorgan has deep ties with the government and firms Saudi Arabia, having worked in the kingdom for more than 80 years.
Pinto said the bank was also in talks with other Gulf companies to list their assets overseas.
He said listings in New York, London, Hong Kong or Singapore might help increase the liquidity of these companies and make them attractive for international investors, he said.
"When you have this type of momentum, people will see the benefit of having a stock that is very liquid. Other companies in the region will probably follow," Pinto said.
Oman said earlier this year it planned to offer shares in some state-owned downstream energy companies to the public. Analysts and bankers have said Qatar and Kuwait may also consider plans to list energy assets.
JPMorgan was considering raising its headcount by 30 percent in Saudi Arabia over the next two to three years from 70 now, as business opportunities expand, Pinto said.
Saudi Arabia unveiled its Vision 2030 economic plan last year to diversify the economy away from oil, with proposals to float the Aramco stake and sell other state assets.
"Saudi Arabia is going through a massive transformation as they diversify their economy," Pinto said. "Over the past year, investors have reacted positively to this news."
The bank's revenue from Saudi Arabia and the rest of the region is expected to be boosted by another record year of bond sales as lower oil prices curbed the ability of banks to finance investments and fund state budget deficits.
Dollar-denominated bond issuance from the Gulf has totalled about $80 billion so far this year, higher than the record $63.5 billion in the whole of 2016, Thomson Reuters data shows.
"The need to issue will still exist but be smaller next year because of higher oil prices and lower deficits and simply because so much refinancing was done this year," Pinto said.
As part of its reform drive, the Saudi government has launched an campaign of arrests of royals, ministers and businessmen, saying it is seeking to stamp out corruption. Those detained include leading Saudi investor Prince Alwaleed bin Talal, whose investment vehicle has a stake in Citigroup.
Commenting on the anti-corruption drive, Pinto said: "If it is done in the right way and for the right reasons it is good to do for the future of the kingdom."
"Brazil went through a similar process. In the long-run, tackling these issues is very important," he said.
Two former presidents and business officials are among those ensnared in Brazil's sprawling corruption purge.
(Reporting by Saeed Azhar and Tom Arnold; Additional reporting by Davide Barbuscia; Editing by Edmund Blair)