During the film shoot, the “Harry Potter” star walked a number of doggies and puffed away on a smoke while excited fans gazed on from the sidelines.
Details for the Judd Apatow-directed film are pretty hush, hush, but it also stars Tilda Swinton, Brie Larson and Ezra Miller.
The upcoming comedy is set to hit the big screen on July 24, 2015.
Enjoy the pictures of Daniel Radcliffe filming scenes for "Trainwreck" in NYC (June 30).