| Wittensee | |
| Native Name Lang: | de |
| Settlement Type: | Former Amt |
| Subdivision Type: | Country |
| Subdivision Name: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | Schleswig-Holstein |
| Subdivision Type3: | District |
| Subdivision Name3: | Rendsburg-Eckernförde |
| Extinct Title: | Disestablished |
| Extinct Date: | 2008-01-01 |
| Seat Type: | Region seat |
| Seat: | Groß Wittensee |
| Leader Title: | Amtsvorsteher |
| Area Total Km2: | 100 |
was an Amt ("collective municipality") in the district of Rendsburg-Eckernförde, in Schleswig-Holstein, Germany. It was named after the lake Wittensee, which is situated in the Amt. It was located between Eckernförde and Rendsburg. The village Groß Wittensee was the seat of the Amt.
In January 2008, it was merged with the Amt Wittensee to form the Amt Hüttener Berge.[1]
The Amt Wittensee consisted of the following municipalities: