Harald H. Langhelle (25 December 1890 – 6 October 1942) was a Norwegian newspaper editor and politician for the Labour Party.
He was elected to the Parliament of Norway from the Market towns of Nordland, Troms and Finnmark in 1921, and sat through one term.
Following skirmishes in Majavatn and sabotages in Glomfjord and Malm, conducted by the Norwegian resistance movement, martial law was declared on 6 October 1942 in and around Trondheim, in Nord-Trøndelag and in Grane Municipality.
In a speech held on the city square of Trondheim, Josef Terboven declared an imminent crackdown on "those who pull the strings".
Harald Langhelle was executed as a propitiatory reprisal, together with theatre director Henry Gleditsch and eight other people.