Rockenwagner will assume her new role on May 19 and fills the gap left by Janet Hill, who departed last June.
The new arrival most recently served as vice president of communications of the Southern California Region of Time Warner Cable. She will report to Paramount chairman and CEO Brad Grey.
'Patti comes to Paramount with a proven record of success in handling a range of strategic communications issues for a large media and entertainment organisation,' Grey said.
'She possesses both an in-depth understanding of the media industry and the energy and skills to ensure that the Paramount brand is consistently projected effectively both internally and to key constituencies in the US and to every territory where we do business. I know she will bring a strong voice and unique perspective to our team.'
At Time Warner, Rockenwagner oversaw all communications strategy including media relations, community investment, employee communications and original programming for the five-county Los Angeles area, San Diego, Desert Cities and Hawaii.
She held a similar position for five years with Comcast of Southern California. Prior to that she was chief of staff and campaign manager for California State Senator Tom Hayden from 1994 to 1997 and legislative director in the office of California State Senator Art Torres from 1992 to 1994.