Listing of UML Diagrams

Depending on the literature that you read, you will find a mention of 9 or 13 diagrams used in UML.
If you read the literature for 9 diagrams, then these are the list of diagrams:

Structural Diagrams

* Class Diagram
* Object Diagram
* Component Diagram
* Deployment Diagram

Behavioral Diagrams

* Use Case Diagram
* Sequence Diagram
* Collaboration Diagram
* Statechart Diagram
* Activity Diagram

If you refer to the literature for 13 diagrams, then you will find the following list of diagrams:

Structure diagrams emphasize what things must be in the system being modeled:

* Class diagram
* Component diagram
* Composite structure diagram
* Deployment diagram
* Object diagram
* Package diagram

Behavior diagrams emphasize what must happen in the system being modeled:

* Activity diagram
* State Machine diagram
* Use case diagram

Interaction diagrams, a subset of behavior diagrams, emphasize the flow of control and data among the things in the system being modeled:

* Communication diagram
* Interaction overview diagram (UML 2.0)
* Sequence diagram
* UML Timing Diagram (UML 2.0)