Burr's parents, William and Minerva, remarried in 1955 after 33 years of separation. Burr had remained close to them, both during their separation and after their second marriage.
Raymond Burr was gay, but hid his sexuality for most of his life out of fear that it would damage his career. He had a 35-year romantic relationship with Robert Benevides (born 1930), a young actor and Korean war veteran whom Burr had met on the set of Perry Mason. For several years in the 1950s, according to an excerpt from Hiding in Plain Sight, a 2008 biography of Burr written by Michael Starr, another young Korean War veteran named Frank Vitti shared Burr's home and was identified in some publications as his nephew.
For most of his life, however, the public believed that Burr was heterosexual. In the late 1950s, Burr was rumored to be romantically involved with the young Natalie Wood. "When I was talking to Dennis Hopper about that," Wood biographer Suzanne Finstad says, "he was saying, I just can't wrap my mind around that one. But you know, I saw them together. They were definitely a couple. Who knows what was going on there?".
Burr's official biography claimed that he had been married three times but that two of his wives and his only child had died. In 1942, while working in London, he claimed to have met an aspiring Scottish actress named "Annette Sutherland" and to have married her the same year. The official biography goes on to claim that, despite protests from him, Sutherland had insisted on fulfilling her acting contract and traveled to Spain with a touring theatre company. She then boarded a flight from Lisbon to London BOAC Flight 777-A, perishing on the same flight as English actor Leslie Howard. However, Burr's biographer Ona L. Hill writes that “no one by the name of "Annette Sutherland Burr" was listed as a passenger on the plane”. In fact, only one of Burr's wives, Isabella Ward, can actually be documented (they were married in 1947 and divorced in 1952; reports of the marriage having been annulled are untrue). The other "wives" appear to have never existed (Sutherland was said to be a British actress, yet British Equity has no record of anyone by that name). The same goes for Burr's "son," who is said to have died from an incurable disease sometime in the 1950s. There is no record anywhere of his birth, existence or death. IMDB states that his spouse was Ward, Isabella (1947 - 1952) (divorced).
In the mid-1950s, Burr met former actor Robert Benevides (sometimes Benevedes). Benevides, who is credited as production consultant in 21 Perry Mason TV movies, was described as Burr’s "long-time companion" in a 1993 TV Guide article. Together the couple owned and operated first an orchid business, then a vineyard, in the Dry Creek Valley. After Burr died, his niece Minerva began a public feud with Benevides, questioning whether he should have been given the bulk of Burr's estate. Benevides remains the proprietor of the Raymond Burr Vineyards, located at 8339 West Dry Creek Road, Healdsburg, California.