The stars will be unveiled in a ceremony on February 22, reports the Daily Express.
Officials say Dean Martin's daughter Deana will accept his star on behalf of her father.
Sinatra and Martin are icons of Sin City entertainment because of their appearances on stage, in film and on television.
The Rat Pack performers appeared in the 1960 movie Ocean's Eleven, about a plan to rob five Las Vegas casinos in one night.
Dean Martin died in 1995, aged 75, while Sinatra passed away at the age of 82 in 1998.
Image: Frank Sinatra is shown with Sammy Davis Jr (centre) and Dean Martin (right) in a scene from the 1964 movie Robin and the Seven Hoods. Photograph: Reuters
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