Fun-Plex is an amusement park located at 7003 Q Street in the Ralston neighborhood of Omaha, Nebraska. It is the largest amusement park in Nebraska,^[1][2][3] Fun-Plex began as “The Kart Ranch” in 1979 with just a go-kart track. In 2015 Fun-Plex is putting a brand new water feature called Makana Splash a water play structure with a 317-gallon bucket that drops water on you. In 2016 Fun-Plex built Nebraska's Only Swim up bar called Breakers Bay Bar. In 2018 Fun-Plex adds Rockin’ Rapids, the biggest and most impressive addition to the park in 40 years! The attraction features two tube slides for single or double riders.

On June 25, 2023, a 6 year old boy named Kidus Endrias was in the Motion Ocean when he hit his head and nearly drowned. He was then taken to Bergen Mercy Hospital before arriving at Children’s Hospital and Medical Center and passing away there 2 days later. The park reopened the day after his passing.^{[citation needed]}

Rides at Fun-Plex include a slick track, bumper boats, and go-gator kiddie coaster. There is a waterpark with a wave pool, five story waterslides, a lazy river, and a children's pool. Other rides includes the Rock-O-Ride, a Tilt-A-Whirl, as well as a classic carousel and the Balloon Ferris wheel. In 2007, the facility boasted new go-karts and a larger track, as well a new 18-hole miniature golf.^[4]

In 2007, the Big Ohhhhhh!!!^[4] was introduced to Fun Plex in Ralston, Nebraska, becoming the state's only roller coaster until its removal in 2018. The coaster has been used at several other parks previous to coming to Fun-Plex.^[5] The roller coaster was subsequently sold and relocated to Lakeside Amusement Park in Denver, Colorado, where it underwent refurbishment from 2018 to 2023 and is fully operational. The site at Fun Plex now sits empty, but the memories of the Big Ohhhhhh!!! will continue to hold significance for the Omaha metro area.

• Official website
• Fun-Plex at the Roller Coaster DataBase

41°12′13″N 96°1′13″W / 41.20361°N 96.02028°W / 41.20361; -96.02028