Delano E. Lewis has been elected vice president and director of the C&P Telephone Co. in Washington. He succeeds Ralph W. Frey, who is retiring after 41 years with the company. Lewis' appointment will be effective Jan. 1.

In his new assignment, Lewis will be responsible for such Washington operations as board of directors' relations, public affairs, regulatory relations, revenue requirements and community relations.

He is also charged with assuring the overall quality of service in the Washington area.

Lewis is a native of Kansas City, Kan., and a graduate of the University of Kansas and Washburn University law school. He joined C&P in 1973 as a public affairs manager. He was appointed assistant vice president for revenue requirements and public affairs in 1975. Earlier this year, Lewis was appointed assistant vice president of external affairs.

Before joining C&P, Lewis was with the U.S. Department of Justice from 1963 to 1965. He then served one year with the Equal Employment Opportunity Commission office of compliance. He was also in the Peace Corps and a legislative aide on Capitol Hill.

Frey joined C&P in 1941 following his graduation from the University of Maryland. He worked for the company in Maryland and West Virginia before being named a vice president and director in 1966. Earlier this year, Frey was named vice president of the Washington operations, the position he presently holds. He will officially retire in March 1983.