UML - Use Case Diagram Examples

UML - Use Case Diagram Examples

UML case diagrams present some of the relationships between use cases, actors, and systems. They are a simple tool to summarize what you want your system to accomplish—whether it's a software suite or a physical system like an ATM. Get inspired by these examples, then create a diagram of your own.

Lucidchart has a dedicated shape library for many types of UML charts, including use case diagrams, activity diagrams, and sequence diagrams. You can also use it to create a SWOT analysis, a Venn diagram, or an app mockup.

Try it now
Sign up free

Creating Use Case Diagram Examples in Lucidchart

Fundamentally, use case diagrams break down how actors—users, organizations or devices—perform different use cases—actions that lead to a specific goal. When designing a system, whether that's a machine, an app, or a workflow, it's important to know who does what. Lucidchart provides the basic shapes and connectors for use case diagrams: you can also customize and perfect by applying color, your choice of font, and images. Use the example templates below as a starting point for creating a professional-quality use case diagram of your own.

UML use case diagram example

Bank ATM use case diagram example

Click on this diagram to see the interactions between a bank customer, an ATM technician, and a bank in regards to an ATM system. Different actors have different goals: withdrawing money versus doing a repair.

UML use case diagram example

Event planning use case diagram example

This diagram shows the many actors and use cases involved in planning an event. By organizing the information visually, relationships become clear in a way they would not with a bullet-point list.

UML use case diagram example

Online shopping use case diagram example

This diagram shows the various human and non-human components of an online shopping system. The use case of making a purchase includes viewing items and completing checkout.


Lucidchart is the ideal diagramming software for use case diagrams in Unified Modeling Language (UML). With an extensive library of shapes, the days of messy, hard-to-read diagrams are over. See how easy it is to create, customize, and share!

Try it now
Sign up free