The wife of former CIA official John A. Paisley has hired an attorney and a private investigator to look into her husband's disappearance and presumed suicide in Chesapeake Bay, according to a published report and Maryland State Police.

The attorney and the investigator met with State Police investigators last Wednesday to discuss what are said to be doubts by Maryann Paisley as to whether her husband is really dead. Mrs. Paisley could not be reached for comment yesterday.

Capt. Paul Rappaport, commander of criminal investigations for the State Police, said yesterday he had met with the lawyer and investigator, both of whom he declined to identify, to assure them that State Police had positively identified Paisley's body as the one they found in the bay Oct. 1, weighted down by two diving belts.

Mrs. Paisley, according to other news accounts, is reportedly upset about the way in which her husband's body was identified by police. She has raised particular questions about a report that the dentist who examined her husband's upper dentures was not sure if they belonged to Paisley.

Rappaport said yesterday that police used both fingerprint and dental examinations to identify Paisley's body and have assured Mrs. Paisley's representatives that their identification was accurate.

The dentist in question, Dr. Alfred Brendes of McLean, said yesterday that Paisley was a patient of his four or five years ago but that he no longer had his dental records. Brendes said police showed him a denture and that he identified it as one he had made and said it looked like a denture he had made for Paisley.

Paisley, 55. a former director of strategic research for the CIA, was last seen alive on Sept. 24 when he went sailing on the bay. His sloop was found abandoned the next day and a body later identified as Paisley's was found a week later. Police concluded Paisley probably committed suicide.