| Type: | Bishop |
| Alfred Gonti Pius Datubara | |
| Archbishop emeritus, Archdiocese of Medan | |
| Honorific-Suffix: | OFM Cap |
| Church: | Roman Catholic Church |
| Archdiocese: | Archdiocese of Medan |
| Term: | 1976–2009 |
| Predecessor: | Antoine Henri van den Hurk |
| Successor: | Anicetus Bongsu Antonius Sinaga |
| Ordination: | 22 February 1964[1] |
| Ordained By: | Antoine Henri van den Hurk, OFM Cap |
| Consecration: | 24 May 1976 |
| Consecrated By: | Justinus Darmojuwono |
| Rank: | Archbishop |
| Birth Date: | 12 February 1934 |
| Birth Place: | Lawe Bekung, Atjeh, Dutch East Indies |
| Previous Post: | Capuchin Priest |
| Motto: | Omnibus Omnia |
Alfred Gonti Pius Datubara, (born 12 February 1934) was the Indonesian Roman Catholic archbishop of Archdiocese of Medan from 1976 to 2009.
Datubara was born in Lawe Bekung[1] in Atjeh, Dutch East Indies (present-day Aceh, Indonesia), and was ordained to the priesthood in 1964. He served as the titular bishop of the Herceg Novi in 1975. In 1976 at the age of 42 Datubara was installed as the first native-born Indonesian Archbishop of Medan succeeding Antoine Henri van den Hurk. He held the title of archbishop until 2009 when he reached the mandatory retirement age of 75.[2] He is a member of the Order of Friars Minor Capuchin.[1]