3AWORLDWIDE | 1,594 followers on LinkedIn. 3AWORLDWIDE is a North American company headquartered in Miami, Florida, the ‘Magic City’, and is represented in more than 51 countries around the world. As the newest media planning, media buying, digital, public relations and events company to enter the international advertising and public relations sphere of business it’s already made impressive strides. In 2014 3AWORLDWIDE was named #175 of the fastest growing companies in North America by INC 500 Magazine.