The hourlong program will be shown at 8 p.m. Jan. 15 on the NBC network and on the USA, Bravo, Trio, Sci-Fi, MSNBC and CNBC channels, the company said Monday. It is set to air live on the East Coast and in tape delay in the West.
NBC Universal described the show as "music and celebrity-driven" but did not announce details on performers.
Phone lines will remain open throughout the evening for donations, NBC Universal said. Clear Channel has agreed to promote the special on its radio stations nationwide.
The benefit is reminiscent of the TV fund-raiser held for victims of the Sept. 11 terrorist attacks. That program, featuring actors and pop stars, was an industry effort carried by more than 30 TV networks including all major broadcasters.
The tsunami, triggered by the world's most powerful earthquake in 40 years, has killed more than 139,000 people in Asia and Africa.