As you know, the intense competition make the business more hard,Business in the New Economy is a civilized version of war! In the e-commerce times, marketing is more important than the other factors. A professional websites is the most important in the online marketing.
Here are 4 professional Corporate wordpress themes.

StationPro: Premium Multi-Color, Dark CMS WordPress Theme for Corporate, Marketing websites

Demo / Download

StationPro is a pro WordPress theme with full CMS capability. It’s designed to work well for professional marketing websites, professional blogs or both. It’s easy to setup and it’s customizable.

Simple,Clean Corporate CMS style WordPress Template:IBlogPro

Demo / Download the IBlogPro for Corporate Website

This is really a very professional designed wordpress theme for Corporate website!
IBlogPro was designed to help you persuasively communicate with a wide audience. It looks great with images and it’s easy to use to build beautiful websites.As with all PageLines themes, iBlogPro is easy to modify and well documented. This means you will be up and running in no time. I do think this theme is more professinaol than the studiopress corporate theme . You can get personal support if you purchase this template.

Professional: A dark marketing wordpress theme form wpzoom.com

Demo / Download
A Unique Premium WordPress Theme with Free & Unlimited Support.
Professional is a theme which can be used as a CMS/Portfolio or as a blog.The very light and flexible layout is based on the “Golden Ratio” principle, having 2 columns. The design mainly emphasizes the content.

Studiopress Corporate Theme

Demo / Download the Studiopress Corporate Theme

This Corporate WordPress Theme is designed by studiopress, which is very famous wordpress template design company. If you buy this theme, you can get access to detailed theme tutorials, including limited customization techniques and support through thier private forum. You will also have access to any future theme updates at no additional cost. I have seen a lot company use this themes.

Business Corporate Premium WordPress Theme: Executive WordPress Theme

Demo / Download Executive WordPress Theme

Executive theme have 4 different custom page layout options with ability to display images or video on the homepage,. Theme is SEO optimized for posts/pages a theme options panel and more.
Notice: you can use the studiopress coupon code BH10 to get a 10% discount.

Also ,here are some Free Corporate WordPress Theme , you can use these wordpress themes free