* Part of a proper noun:
* Project Management Institute: This is the name of an organization.
* Project Gutenberg: This is the name of a specific project.
* The Manhattan Project: This is the name of a historical project.
* The formal title of a specific project:
* Project Phoenix: This is the name of a specific project.
* Project Blue Book: This is the name of a specific project.
* Project X: This is the name of a specific project.
* Used as a formal title within a document:
* "Project Proposal for the New Library"
* "Project Timeline for the Website Redesign"
You do not capitalize "project" when:
* It is used in a general sense:
* "We need to start a new project soon."
* "The team is working on a project to improve the website."
* It is not part of a formal title:
* "The project was completed on time and within budget."
* "The project manager is responsible for the team's progress."
In general, it's best to err on the side of caution and only capitalize "project" when it is part of a proper noun or a formal title.