Niels Hemmingsens Gade is a street in the Old Town of Copenhagen, Denmark.

The street runs from the western part of Amagertorv in the south to Skindergade in the north, passing Gråbrødretorv on the way.

The inclusion of "Little" in the name distinguished it from Store Helliggeiststræde ("Large Holy Ghost Street"), as Valkendorfsgade was then called.

The section of present-day Niels Hemmingsens Gade which runs from Gråbrødretorv to Skindergade was called Trompetergangen or Trompetergade after Ambrosius Løffelman, a trumpeter who owned property at the site.

[1] The short section from Valkendorfsgade to Gråbrødretorv (Løvgade) was called Tugthusporten (Jailhouse Gate) after a children's jail established at the site by Christian IV but soon moved to Christianshavn (see Women's Prison, Christianshavn).

[3] Tugthusporten was merged into Lille Helliggeiststræde in 1843 after complaints from the residents who found the name unappealing.

2, on its centered corner with Amagertorv, between the first and second floors, is a plaque commemorating that Herluf Trolle and Birgitte Gøye owned a property at the site.

It mentions that they founded Herlufsholm School on 23 May 1565 and that Trolle died one month later in the house at the site.