| Tista | |
| Name Other: | Tistedalselv, Tistedalselva |
| Subdivision Type1: | Country |
| Subdivision Name1: | Norway |
| Subdivision Type2: | County |
| Subdivision Name2: | Østfold |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Halden |
| Source1: | Femsjøen lake |
| Source1 Location: | Halden |
| Mouth: | Iddefjord |
| Mouth Location: | Halden |
| Basin Landmarks: | Fredriksten fortress |
Tista, also called Tistedalselva or Tistakanalen, is a river in Halden municipality, in Østfold county, Norway. It is the main river in the Haldenvassdraget system and flows from Femsjøen lake to Iddefjorden fjord. The river is less than 5 km long, calculated from the dam in Femsjøen to the mouth of the fjord.