The People's Alliance (Bulgarian: Народен сговор) was a Bulgarian party created on 14 October 1921 by a group of non-party university teachers.
The purpose of the People's Alliance was to stop the growing influence of the leftists and the authoritarian rule of the Bulgarian Agrarian People's Union.
After the government of Aleksandar Stamboliyski eliminated the leaders of the opposition Constitutional Bloc in the end of 1922 and the fraud of the 1923 elections, the leaders of the People's Alliance allied with the Military Union and the Internal Macedonian Revolutionary Organization which was decisive for the 9 June coup d'état.
The People's Alliance was sometimes called by its opponents the "Black Bloc" or the "Black Blood Bloc".
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