The Carter-Mondale Presidential Committee Inc., which has raised some $5.8 million to date, is being sued for nonpayment of some $13,418.98 in rent to a former landlord.

Controller Donna Sagemiller and an attorney for the committee have been served with summonses to appear on Jan. 16 in the Landlord And Tenant Court of the District of Columbia.

Elliot P. Denniberg, owner of 816 Connecticut Ave. NW, claims in his complaint that President Carter's campaign committee moved out of his building into larger quarters in violation of a lease signed through March 1980. The rent claimed is for November and December.

Denniberg says that the Carter-Mondale committee vacated his premises "sometime in late September or early October without even telling me they were going or gone. I discovered they had moved out when I went to make a routine check in early October." For more than two months, he says, "they chose to ignore my telephone calls or make any kind of response when I left urgent messages."

Denniberg said that the leases had been "personally guaranteed verbally" by real estate developer Nathan Landow, a top Carter fund-raiser.

Landow said yesterday that he had "recommended to the committee that they go ahead and pay what was due."

Laughing, he said: "I doubt very much if they are going to go to Landlord And Tenant Court."

Denniberg said yesterday that he had waited until the day after Christmas to file the complaint because he had been promised by committee Chairman Evan Dobelle that "someone would get back to me to take care of the matter on that day.

"No one did and no one would return my phone calls," he said, "even though Dobelle had told me that if I don't call you Wednesday [the 26th], you call me."

Dobelle said that he had referred the matter to Sagemiller, who had gone home for the holidays.

"We're probably going to pay him, . . . probably going to pay him this week," he said. "No, it's not that we don't have the money . . . Jesus, we have $1 million free and clear and are going to report $5.8 -- close to $6 million the next filing."

A Greek shipping industry source knowledgeable about Christina Onassis' business and personal affairs, says that her Moscow marriage to Russian Sergei Kauzov was never recognized as legal in Greece anyway.

The civil cermony was not valid because it was not followed by a religious service in the Greek Orthodox Church, the source said.

"She wouldn't have needed to divorce him in Greece," the source claims.It seemed a magnanimous gesture to most observers recently when Christina gave Sergei a tanker of his very own. "That was necessary," the source says, "to settle any claims he might make against her foreign flag ships and her investments in other countries."

"Christina," he added, "only married Sergei to attract media attention. She seems suddenly determined to overshadow her father as a celebrity tycoon." s

Georgetown couturier Hae Hie Chang, who clothes a lot of Washington socialites and partially clothes the Bullets cheerleaders, studied for the opera at the Peabody Institute when she first came here from Korea. At the Sign of the Dove the other night, she did an aria from "La Boheme" that was greeted with more applause than the first costumes she designed for the Capital Centre's basketball chorus line . . . One of 1979's most original Christmas presents has got to be from the customer who went out to Grove Printing in Rockville and ordered stationery he said was for a buddy who is doing time where some of the Watergate burglars did time. The letterhead and envelopes were reprinted: "Camp Lampoc, The 'In' Place For Those Who Are Really 'In.'"