There are no organelles found exclusively in bacteria. All organelles are membrane-bound structures, and bacteria are prokaryotes, meaning they lack a nucleus and other membrane-bound organelles.

However, bacteria do have some unique structures that are not found in eukaryotic cells:

* Plasmids: Small, circular DNA molecules that carry extra genes.

* Ribosomes: These are involved in protein synthesis, but bacterial ribosomes are smaller than eukaryotic ribosomes.

* Capsule: A protective layer outside the cell wall, made of polysaccharides.

* Pili: Hair-like appendages that help bacteria attach to surfaces.

* Flagella: Tail-like structures used for movement.

It's important to remember that these structures are not technically considered "organelles" because they are not membrane-bound. However, they are still essential for bacterial function and survival.