Antonio Imbert Barrera (December 3, 1920 – May 31, 2016) was an officer of the Dominican Army. He was one of the two rival rulers in the Dominican Republic from May 7, 1965 until August 30, 1965, amid the Dominican Civil War. He had succeeded General Pedro B. Benoit van der Horst who ruled for less than a week. After the civil war ended, both General Imbert and his rival Colonel Francisco Caamaño resigned and Héctor García-Godoy was sworn as interim president. (See List of Presidents of the Dominican Republic).

Barrera's first significant position was as governor of Puerto Plata in 1940. He was removed from the post by the dictator Rafael Trujillo for sending a telegram to Trujillo informing upon the names of the survivors of the failed Luperón invasion. This caused, in a personal manner, the beginning of the murder plan against Trujillo.

On May 30, 1961 Trujillo was shot dead when his car was ambushed on a road outside the Dominican capital. Imbert, accompanied by Antonio de la Maza, Salvador Estrella Sahdalá and Lt. Amado García Guerrero. who was the driver of the ambushing vehicle, were the active participants who carried out the plot. Most of those involved in the assassination plot were subsequently captured and executed, with the exception of Imbert and Luis Amiama Tió. Imbert went into hiding until December 2.

As a result, Imbert was declared a "National Hero", and was awarded the general grade Advitam. In the Civil War in the Dominican Republic of 1965 he led one of the factions in the struggle which faced the constitutionalist government led by Colonel Francisco Caamaño, who tried to bring back Juan Bosch to the country's presidency. Imbert's faction, called the Government of National Reconstruction was endorsed by the U.S. troops inspectors, in addition, he was one of the collaborators with the Americans, finally signing a peace act that put an end to the April war.

On March 21, 1967, he was shot in Santo Domingo while traveling with Marino García. The attempted assassination was made by the late dictator Trujillo's supporters. He survived by driving himself to a medical clinic.

Imbert Barrera died on May 31, 2016 at the age of 95.