Councilwoman Ruthelyn Plummer was elected mayor Monday night by a unanimous vote of her colleagues.
Plummer, serving her third term on the council, will hold the post for one year.
"Every mayor has left their stamp on the city," Plummer said. "I pledge to leave a positive stamp."
As mayor, Plummer said she would like to see the council set goals for the city "that will lead us into the 21st Century." She said she hoped to preserve the quality of life in Newport Beach, ensure the economic health of local businesses and keep the traffic moving.
"We have a beautiful and unique city, but it does need fine-tuning," Plummer said.
A retiree of the Orange County consumer affairs office, where she was an investigator, Plummer represents District 2, which includes West Newport and Newport Shores.
As a council member, Plummer said the most rewarding thing for her so far was the adoption of summertime parking permits for residents of Newport Island.
Plummer succeeds Donald A. Strauss. Councilman Phil Sansone was chosen mayor pro tem.