| Cserhátszentiván | |
| Settlement Type: | Village and Municipality |
| Subdivision Type: | Country |
| Subdivision Name: |  Hungary |
| Subdivision Type1: | Region |
| Subdivision Name1: | Northern Hungary |
| Subdivision Type2: | County |
| Subdivision Name2: | Nógrád |
| Subdivision Type3: | District |
| Subdivision Name3: | Pásztó |
| Leader Party: | Independent |
| Leader Title: | Mayor |
| Leader Name: | Attila Siraky |
| Postal Code: | 3066 |
| Area Code: | 32 |
| Population Total: | 108 |
| Population As Of: | 2023 |
| Population Density Km2: | auto |
| Area Total Km2: | 10.66 |
| Timezone1: | CET |
| Utc Offset: | +1 |
Cserhátszentiván is a village and municipality in the comitat of Nógrád, Hungary.
| Year | Population | |
|---|---|---|
| 1870 | 694 | |
| 1880 | 608 | |
| 1890 | 602 | |
| 1900 | 554 | |
| 1910 | 643 | |
| 1920 | 594 | |
| 1930 | 610 | |
| 1941 | 663 | |
| 1949 | 616 | |
| 1960 | 533 | |
| 1970 | 431 | |
| 1980 | 297 | |
| 1990 | 224 | |
| 2001 | 167 | |
| 2011 | 142 |