Petrus Hendrik Willem "Peter" Sitsen (1 November 1885 – 21 January 1945) was a military officer, building contractor and public servant in colonial Indonesia.

Sitsen completed high school in 1901 and continued studying engineering at the Royal Military Academy (KMA) in Breda.

[10] Having served out his KNIL contract, Sitsen left the army in 1912 and became a senior land surveyor (rooimeester) with the Jakarta city council.

[11] He left the job in 1915[12] to take the position of Director of Public Works (Directeur van de Sultanaatswerken) in the Sultanate of Yogyakarta in Central Java.

[14] The Sitsen en Louzada company designed and constructed a wide range of private and public buildings and other structures in Central and East Java during the 1920s and early 1930s.

For example, an electric power plant in Yogyakarta for the ANIEM (Algemeene Nederlandsch-Indische Electriciteits-Maatschappij) company[15] and the bazaar building of Cilacap, one of the first all-concrete structures in Indonesia.

[16] The company was relatively successful, listing on the Surabaya stock exchange and raising a social capital of f 250,000, later increased to f 1 million.

Following its presentation and discussion at the 1937 annual meeting of the Department’s senior officials, Sitsen published the policy principles for small scale industries in 1937.

The Netherlands Indies Civil Administration had ample supplies, ready to be sent for relief to different parts of the Indonesian archipelago as soon as the Japanese were defeated.

It was first rolled out in Eastern Indonesia, where it helped to relieve shortages, contributed to quick economic recovery during 1945 and normalised living conditions by 1946.

[31] By contrast, distribution of aid supplies in Java and Sumatra was confined to the Dutch-held urban footholds until July 1947 due to the war of independence.

An additional part of the plan was establishment of NIGIEO (Nederlandsch-Indische Gouvernements Import- en Export Organisatie) in March 1946.

[32] The organisation was liquidated at the end of 1947, when Indonesia's exports increased and the need for foreign exchange rationing and relief imports decreased.

[34] However, in the course of the 1950s, the Indonesian government under President Sukarno watered this policy down in favour of the development of large, often state-owned industrial enterprises.