Arnoldus Isaac Zacharias Mononutu (4 December 1896 – 5 September 1983) was an Indonesian nationalist, politician, and national hero of Indonesia from North Sulawesi, who served as Minister of Information from 1949 until 1950, and the again from 1951 until 1953.

In 1913, Mononutu went to the Dutch secondary school (HBS or Hogere burgerschool (nl)) in Batavia where he met and became friends with AA Maramis (also from Minahasa) and Achmad Subardjo.

[7] During his time in Paris, the Dutch Political Intelligence Department or Politieke Inlichtingen Dienst became suspicious of Mononutu's activities.

[9] Upon secretly receiving money from his father through his uncle who was travelling to the Netherlands, Mononutu was able to pay all his debts and return home to Indonesia in September 1927.

The future Indonesian national anthem Indonesia Raya by Wage Rudolf Supratman was first heard in this venue.

A newspaper called the Tower of Independence or Menara Merdeka was published to promote the ideals of Persatuan Indonesia.

[18] The paper promoted a pro-republic message and criticized efforts by the Dutch to establish a separate state apart from the recently proclaimed Republic of Indonesia.

[19][20] He focused his efforts to persuade other members of parliament to support the notion of unifying NIT with the Republic of Indonesia.

In February 1948, he led a delegation of NIT officials to visit and meet with the leaders of the Republic of Indonesia in Yogyakarta.

Mononutu was appointed Information Minister in the Indonesian government on three separate occasions: During his time as information minister, several regions in Indonesia were rocked by rebellious uprisings including in West Java (Legion of the Just Ruler), South Sulawesi (by Andi Aziz), and Maluku (by Chris Soumokil).

Mononutu along with Sukarno visited these regions and in large open-air meetings promoted the ideal of a unified nation.

[27] On 15 February 1961, Mononutu was awarded the Bintang Mahaputera Utama, the highest honor given to a civilian by the Indonesian government.

On 10 November 2020, he was posthumously conferred the honorary title of National Hero of Indonesia by President Joko Widodo in a ceremony at the State Palace.