Star on the Mountain, Illuminated structure in Franklin Mountains, Texas, US.

Star on the Mountain is an illuminated arrangement in the Franklin Mountains of El Paso, Texas, consisting of more than four hundred bulbs installed on the mountainside at over 4,600 feet (1,400 m) elevation. The formation spans several dozen meters and produces a bright white pattern visible from much of the city and surrounding areas.

The star was first lit on 29 November 1940 at 6:10 p.m. with over 300 blue lamps, built by the El Paso Electric Company as a Christmas decoration meant to remind people on both sides of the Mexico–United States border that America was at peace during the holiday season. The original star was only 50 feet wide; a larger, more durable version followed, and after a storm destroyed it, it was rebuilt in December 1946 with 459 150-watt lamps at 459 by 278 feet. For almost 50 years it shone only in the holiday season, except for 444 nights from 1979 in support of U.S. hostages in Iran and nightly from December 1990 until 21 August 1991, when the last Fort Bliss soldier returned from the Gulf War. In November 1993 a joint project of the Greater El Paso Chamber of Commerce and El Paso Electric made it shine nightly.

The star was first lit on November 29, 1940, as a Christmas decoration meant to remind people on both sides of the Mexico–United States border that America was at peace during the holiday season. Since November 1993 the Greater El Paso Chamber of Commerce and El Paso Electric have lit it nightly, and individuals can sponsor a lighting in honor of a loved one or a special occasion.

The lights switch on automatically after sunset and remain visible throughout the night, with viewing angles varying from different points across the city. Clear evenings offer the best visibility, while haze or low clouds can reduce how well the arrangement shows up.

In 2023 the El Paso Chamber replaced the star's bulbs with individually computer-controlled, shatter-proof units made by the New York company CodeLumen, part of a $300,000 project. The old bulbs were sold for $1,000 each to help fund the work. A 2007 remodel had already added a radio frequency system allowing remote control from a computer or cell phone.