| Stary Cydzyn | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Podlaskie |
| Subdivision Type2: | County |
| Subdivision Name2: | Łomża |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Piątnica |
| Pushpin Map: | Poland |
| Coordinates: | 53.2436°N 22.1206°W |
Stary Cydzyn is a village in the administrative district of Gmina Piątnica, within Łomża County, Podlaskie Voivodeship, in north-eastern Poland.[1] It lies approximately 6km (04miles) north of Piątnica, 90NaN0 north of Łomża, and 720NaN0 west of the regional capital Białystok.