| Type: | Bishop |
| Appointed: | --> |
| Term Start: | 10 August 1915 |
| Term End: | 5 December 1937 |
| Retired: | --> |
| Predecessor: | Alfons Bermyn |
| Successor: | Louis Morel |
| Louis van Dyck | |
| Church: | Sacred Heart Cathedral, Hohhot |
| Province: | Suiyuan |
| Ordination: | 30 May 1885 |
| Birth Date: | 21 January 1862 |
| Birth Place: | Loenhout, Flemish Region, Belgium |
| Death Place: | Hohhot, Republic of China |
| Tomb: | --> |
| Religion: | Roman Catholic |
| Partner: | --> |
Louis van Dyck (; 21 January 1862 – 4 December 1937) was a Belgian Catholic priest, missionary, and Bishop of the Roman Catholic Archdiocese of Suiyuan between 1915 and 1937.[1]
Louis van Dyck was born in Loenhout, Flemish Region, Belgium, on 21 January 1862. He joined the CICM Missionaries in 1882. He was ordained a priest on 30 May 1885. He came to Mongolia to preach in 1887. On 10 August 1915 the Holy See appointed Louis van Dyck as Bishop of the Roman Catholic Archdiocese of Suiyuan to replace the dead Bishop Alfonso Bermyn. He was consecrated on 23 January 1916.
He retired in 1937, and died on 4 December that year, aged 75.