Creating PowerPoint presentations is not typically something people get excited about, so templates and themes that can make your job easier are extremely useful. Trying to find the right solution may be a bit daunting, though. We've found some great resources and wanted to share those with you. These sites offer PowerPoint templates and themes that not only make it easy to create amazing presentations, but also save you valuable time in the process.
Slideshop.com
Slideshop.com creates quality PowerPoint template slides that are very user friendly. Their goal is to do the heavy lifting for you, allowing you to easily customize the slides according to your need. Their templates include categories like Business, Marketing, Planning, and they also have a huge library of slides for diagrams, charts, animations, maps and more. Below are a couple examples of their templates.
Business Plan Production

Project Status Slides

Browse more templates by Slideshop >
Microsoft
If you are looking for free themes to give your presentation a consistent look and feel, Microsoft has a nice selection to choose from. They can be a bit less user-friendly for those new to PowerPoint. Below are a couple examples of business related themes.
Business Marketing Glass Cube Presentation

Business Digital Blue Tunnel Presentation

Browse Microsoft's PowerPoint Template Gallery >
Graphicriver.net
Graphicriver.net provides a huge selection of purchasable graphics for print, web, presentations and more. Their presentation section has professionally designed slide bundles. A bundle can include everything from a basic text slide to a slide with charts and graphics. The bundles also follow a theme with the same look and feel throughout all the slides making it easy to pick and choose the slides that will best suit your needs. Below is an example of a specific bundle.
Akuntansi Powerpoint Bundle

Comments
sir,
1) please provide they template in calendar-academic with indian holidays, sir your template is one of the best with monday should be the first day of the week. and saturday and sunday should mark as a holiday..
2) can you made the template for indian school timetable?.