Woodstock '99 (also called Woodstock 1999) was a music festival held from July 22 to July 25, 1999, in Rome, New York. After Woodstock '94, it was the second large-scale music festival that attempted to emulate the original 1969 Woodstock festival. Like the previous festivals, it was held in upstate New York, this time at the former Griffiss Air Force Base roughly one hundred miles (160 km) from the original Woodstock site. The attendance was approximately 220,000 over four days.

The cable network MTV covered the festival extensively, and live coverage was available on pay-per-view. Westwood One held its radio rights.Excerpts were released on CD and DVD.

The festival was marred by controversy and difficult environmental conditions, overpriced food and water, poor sanitation leading to sicknesses, sexual harassment and rapes, looting, vandalism, arson, violence and death.

Insane Clown Posse was interviewed at the Woodstock Festival where they perfomed.