| Honorific-Prefix: | The Most Reverend |
| Hendrick Joseph Cornelius Maria de Cocq | |
| Honorific-Suffix: | SS.CC. |
| Bishop of Rarotonga, Cook Islands | |
| Birth Date: | 6 May 1906 |
| Birth Place: | Tilburg, Netherlands |
| Death Date: | 22 January 1998 (aged 91) |
| Death Place: | Cook Islands |
Hendrick Joseph Cornelius Maria de Cocq, SS.CC. (6 May 1906 – 22 January 1998) was a Dutch prelate of the Roman Catholic Church. He served as Bishop of the Diocese of Rarotonga from 1966 until his resignation in 1971.
De Cocq was born in Tilburg, Netherlands, on 6 May 1906.[1] [2] He was ordained a priest of the Congregation of the Sacred Hearts of Jesus and Mary on 22 July 1931.
On 10 February 1964, de Cocq was appointed Vicar Apostolic of the Cook Islands, and was also appointed Titular Bishop of Aquae in Byzacena. He was consecrated on 28 June 1964, with Bishop Reginald Delargey serving as principal consecrator. On 21 June 1966, he was appointed Bishop of Rarotonga, and he resigned on 28 April 1971.
De Cocq died on 22 January 1998 at the age of 91.