Awards says O stands for outstanding.
The four-year-old communications agency took away the top honour at the NewcastleGateshead Hilton, with judges praising its hard work in "talent development, their culture of innovation and enjoyment of work".
The growing firm, based in Ouseburn, Newcastle, also came home with the Best Not-for-Profit title and a silver award for Best Use of Photography and Design for Young Enterprise North East's One Day campaign and silver for Best Use of Social Media.
The judges said: "Established in 2005, O Communications has grown rapidly, to become one of the region's most highly respected and creative PR agencies.
O's client base is a representation of business throughout the North-East. They work hard at talent development, their culture of innovation and enjoyment of work."
The CIPR PRide Awards are hotly contested and recognise creativity, planning and outstanding execution of PR campaigns.
It is the only awards scheme that showcases the best PR work being carried out across the UK regions and nations.
O Communications is run by 36-yearold Kari Owers, and employs eight people at its converted pottery offices in the burgeoning creative quarter of Ouseburn.
Managing director Kari said: "To win this coveted award so early in our journey, and in a year of countrywide recession, proves that clients are seeking young, hungry and innovative PR agencies to deliver new ways of thinking and make their brands stand out. "We are delighted to have been recognised by the CIPR for doing something different, and look forward to using the award as a basis to grow further in the next year."
The firm represents a wide range of top north east businesses, in sectors such as retail and leisure, arts and culture, technology, process industries, skills, education and enterprise.
Since the appointment of former Journal commercial property editor Rebekah Ashby to the team last year, it has also grown a strong portfolio in property and construction, including England's biggest speculative business park, Quorum.
Sally Keith, chair of CIPR North East, said: "A CIPR PRide Award is a hallmark of professionalism and success - it identifies, recognises and rewards the outstanding achievements of those working in the PR industry outside of London.
"To win a CIPR PRide Award is a tremendous achievement and I congratulate all of this year's winners."
WINNERS - O Communications team celebrate winning Outstanding Consultancy at the CIPR awards.