Coulée verte René-Dumont, Urban park and elevated footpath in 12th arrondissement, France.

The Coulée verte René-Dumont is an elevated footpath and green space about 4.7 kilometers long in the 12th arrondissement, running on a former railway line and connecting gardens, tunnels, and bridges at various heights. The path moves through different neighborhoods and provides stairs and elevators at various points for access, while the eastern section also welcomes cyclists.

The Coulée verte René-Dumont follows the Vincennes railway line, which from 1859 linked Bastille station to Verneuil-l'Étang via Vincennes and closed on 14 December 1969. Landscape architect Jacques Vergely and architect Philippe Mathieux designed the promenade from 1988, and it was inaugurated in 1993. It was the first project in the world to turn an elevated abandoned railway into an urban garden, an example later followed by New York's High Line.

The name honors environmentalist René Dumont, and beneath the elevated path you find artisan workshops and galleries housed in restored archways of the Viaduc des Arts. These studios shape the character of the place and draw visitors who want to watch local craftspeople at work.

The western section on the Viaduc des Arts is for pedestrians only, reached by stairs and elevators along Avenue Daumesnil; the eastern section, below street level, has separate lanes for walkers and cyclists. The route runs 4.7 km from Bastille to Porte de Montempoivre, with metro stops Bastille, Gare de Lyon, Montgallet, Daumesnil and Bel-Air nearby. At the Porte de Montempoivre end, access is by a modern spiral staircase or a gentle slope.

The parkway was the first in the world to turn an elevated railway line into a garden, a model later followed by New York's High Line, whose first phase opened in 2009. It also appears in Richard Linklater's 2004 film Before Sunset, with Ethan Hawke and Julie Delpy.