| Carl Gustaf Casimir Gripenberg | |
| Death Date: | (aged 71) |
| Birth Place: | Grand Duchy of Finland, Russian Empire |
| Death Place: | Tsarskoye Selo, Saint Petersburg, Russian Empire |
| Serviceyears: | 1855 – |
| Rank: | Rear Admiral |
Carl Gustaf Casimir Gripenberg (Russian: Казимир Казимирович Гриппенберг, Kazimir Kazimirovich Grippenberg;) was a Finland–Swedish naval officer who served in the Imperial Russian Navy. He was a member of the Finno-Swedish noble, and was the older brother of General Oskar Gripenberg. He was a participant in the "Third American Expedition" in 1878.
The Swedish noble was originated from the Swedish province of Östergötland, and the original family name was Witte or Wittman before being granted nobility. The first ever known member of the family was Jacob Jöransson Witte (died 1659), who was a resident in the county of Östra Eneby socken in Östergötland. His son, Johan Wittman (16371703) was a military designer in the Västerbotten Regiment, and was granted nobility and the surname of Gripenberg in 1678.