| Pisansin Za-in | |
| Fullname: | Pisansin Za-in |
| Birth Date: | 1983 11, df=yes |
| Birth Place: | Thailand |
| Height: | [1] |
| Currentclub: | Navy |
| Clubnumber: | 9 |
| Position: | Forward |
| Years1: | 2013–2014 |
| Clubs1: | Samutsongkhram |
| Caps1: | 10 |
| Goals1: | 1 |
| Years2: | 2015–2018 |
| Clubs2: | Navy |
| Caps2: | 36 |
| Goals2: | 4 |
| Pcupdate: | 00:54, 22 September 2017 (UTC) |
| Years3: | 2019- |
| Clubs3: | Royal Thai Fleet FC |
| Caps3: | 17 |
| Goals3: | 7 |
Pisansin Za-in (born 3 November 1983) is a Thai professional footballer. He previously played for Navy, having also played for Samut Songkhram. On 17 October 2015, Za-in scored a hat trick in a shocking 4-2 win over Suphanburi.[2] After the Navy was relegated to the Second Division at the end of 2018, he moved to Royal Thai Fleet FC. The club is also based in Sattahip and played in the third division, the Thai-League 3 East.