Filmyfly.com seems to be a possible source where you can stream or download the movie, but I couldn't verify its current availability.
: Delivers a grounded performance as the weary but determined police official. A Wednesday -2008- Filmyfly.Com
as the "Anonymous Caller": He portrays the ultimate vigilante—not with a cape, but with a mobile phone and a simple lunch box. His performance is restrained yet explosive. Filmyfly
Downloading or streaming from torrent and piracy sites is illegal in many jurisdictions. His performance is restrained yet explosive
The official Rajshri Productions YouTube channel often streams "A Wednesday" for free with minimal ads. You can watch the full movie legally in 1080p right now without risking a virus or a legal notice.
Neeraj Pathak's direction is commendable, as he skillfully weaves a complex narrative that keeps the viewer engaged. The pacing is well-balanced, and the tension builds steadily throughout the film.