Jetline, Steel roller coaster at Gröna Lund amusement park, Stockholm, Sweden

Jetline was a steel roller coaster at Gröna Lund in Stockholm, built by Zierer and opened on 23 April 1988. Its curved lift hill raised the train to 32 metres, then a right turn led into a first drop with a short tunnel at its base; the second half ran through banked turns and helices into a final tunnel. Maurer rebuilt the first drop in 2000, and the ride closed permanently after the 2023 derailment.

Jetline opened at Gröna Lund on 23 April 1988, built by Zierer to a design by Anton Schwarzkopf as a copy of the Bavarian Mountain Railroad that had opened in Kobe, Japan, in 1987. In 2000 Maurer Söhne rebuilt it with a longer, steeper first drop and a tunnel at its base. After the 25 June 2023 derailment the ride never reopened; following the final accident report of 14 June 2024, Gröna Lund closed it permanently and dismantling began after the 2025 season.

Jetline was a copy of the Bavarian Mountain Railroad, opened in 1987 at Portopialand in Kobe, Japan; that ride later moved to Camelot Theme Park in Britain as Knightmare. Unlike Knightmare, Jetline had no lap bar and no safety belt, only the restraint riders held. Before the 2023 accident it carried about one million riders a year.

Jetline no longer operates: after the 25 June 2023 derailment it stayed closed, and following the Swedish Accident Investigation Authority's final report of 14 June 2024 Gröna Lund decided to close it permanently. Dismantling began after the 2025 season and continued through the winter, so visitors today see no ride to board. The former entrance stood in the waterfront park, where the cleared site can be viewed during opening hours.

Jetline was a copy of the Bavarian Mountain Railroad, which opened in 1987 in Portopialand, Kobe, Japan. That ride moved to Camelot Theme Park in Britain in 2006 and ran as Knightmare until 2012; unlike Jetline it was never rebuilt and kept both a lap bar and a seat belt. Jetline reached a top force of 4.5 g, against Knightmare's 5 g.