Springwood and Katoomba towns have been promised $20,000 each for CCTV cameras.
Senator Marise Payne travelled to the Mountains last week to announce the federal government grants.
"We've been doing a lot of work towards community safety," she said. "We want to ensure we are providing more support for CCTV."
Springwood Chamber of Commerce president, Ellissa Nolan, said the business community welcomed the announcement, which would also benefit local residents, particularly women who may feel vulnerable.
"It will help safety from a business perspective and also from a personal perspective," she said.
Liberal candidate for Macquarie, Sarah Richards, said the cameras would have been useful outside her electoral office in the past fortnight.
Two days after she opened the Macquarie Road office, the front window was vandalised, with spectacles drawn on Ms Richards' face and rude remarks written across it.
Then in the early hours of Monday morning, someone ripped part of the large-scale poster stuck on to the window.
Senator Payne said cameras would make all the difference.
"Keeping eyes on it [the street] really changes things," she said. "It think it's a value-add for the business community."
President of the Katoomba Chamber of Commerce, Mark Jarvis, said he was delighted to hear the announcement.
"As a tourist town, it is essential that tourists and locals are in a safe environment to enjoy the sights of the Blue Mountains," he said.
Last year, 18 cameras were installed in Leura, thanks to a federal government grant of $120,000.
In 2016, 15 cameras were installed in Wentworth Falls at Station St, Plantation St and Coronation Park with a grant of $150,000.
Cameras were also installed at Peter Carroll field in Leura, where the cricket club had endured repeated vandalism.
Blue Mountains Cricket Association CEO, Ian Strudwick, said the cameras mostly worked fine - apart from three occasions (in four years) when they were taken out by lightning.
"We've had a lightning strike that blows out one of the main bits of the equipment that powers the cameras. Not unusual to have lightning strikes around there.
"We've been able to produced video to convict a couple of graffiti crimes and a break-in," he said.