New Texas Giant is a steel roller coaster located at Six Flags Over Texas in Arlington, Texas. It originally opened as Texas Giant, which was the tallest wooden roller coaster in the world when it debuted in 1990. Manufactured by Dinn Corporation and designed by Curtis D. Summers, Texas Giant operated for nearly two decades and was ranked in Amusement Today magazine's annual Golden Ticket Awards as the best roller coaster in 1998 and 1999. The ride's popularity declined as it gained a negative reputation for its increasing roughness.

Texas Giant closed in 2009 and underwent an 18-month refurbishment by Rocky Mountain Construction (RMC). It reemerged as New Texas Giant in 2011. Much of the original wooden structure was kept, but the wooden track was replaced with steel using RMC's I-Box track technology. The renovated coaster saw an increase in height from 143 to 153 feet (44 to 47 m) and drop length from 137 to 147 feet (42 to 45 m), as well as a steeper drop angle of 79°. New Texas Giant also features multiple banked turns up to an angle of 115°.

The renovated coaster was well-received, winning Best New Ride in the 2011 Golden Ticket Awards and ranking highly in industry polls. A fatal incident that occurred on July 19, 2013, resulted in modifications to the ride's restraint system.