The £3 million investment will also see new ticket machines, ramps and platform extensions at stations throughout the Scottish rail network, Transport Minister Keith Brown said.
Upgraded help points and customer information screens will be installed at 56 stations directly serving the Games, designed to offer advice to passengers and tourists. The funding is in addition to the £2m announced by the Scottish Government last year and already being invested by ScotRail to upgrade and enhance railway stations serving sporting venues.
Mr Brown said:"These improvements, together with the millions already invested in rail infrastructure and ongoing work to provide more rail services and greater capacity during Games time, will support major events in 2014 and will leave a lasting, beneficial legacy for the whole nation."
Steve Montgomery, ScotRail managing director, said: "The provision of information to customers is always important, but it will be even more vital when we help thousands of fans enjoy the Games this summer. This additional funding will ensure that visitors and commuters alike have immediate access to the latest live information."