Spider, Steel roller coaster in Lagoon Amusement Park, Farmington, United States

Spider is a steel spinning roller coaster built by Maurer Söhne at Lagoon Amusement Park in Farmington, Utah. Its vehicles seat two pairs of riders facing opposite directions and carry the name "The Spider and the Fly", the ride's original name. In 2016 the track and supports were repainted red and black, replacing pink and purple.

The coaster was built in 2003 by German manufacturer Maurer Söhne. It became part of the park's lineup and has remained a popular attraction for visitors ever since.

The ride's vehicles carry the name "The Spider and the Fly", the coaster's original title, which is why the spider theme is tied to the cars rather than to any arachnid symbolism in the track. The name survives on the spinning vehicles today.

Riders need to be at least 46 inches (117 centimeters) tall to experience the coaster. Smaller guests between 46 and 50 inches (127 centimeters) must have an adult companion present.

The cars are arranged in opposing pairs, so passengers seated in different positions see the ride from completely opposite viewpoints as they move. This makes every journey feel different depending on where you sit in the train.