In a rebuff to the Carter administration's call to ostracize the Moscow Olympics this summer, the national Olympic committees of 16 European countries meeting in Brussels voted against a boycott yesterday.

Delegates from eight of the countries including Great Britain also vowed to send teams to Moscow even if their governments joined Carter's call for a boycott because of the Soviet Union invasion of Afghanistan.

F. Don Miller, executive director of the U.S. Olympic Committee, contacted in Brussels last night, said the vote was not a surprise.

"It was basically a reaffirmation of (the Olympic committees') positions that they're opposed to a boycott, although that is not necessarily their governments' position," Miller said.

Delegates who said their teams would be at the Games even if their governments endorsed the boycott were from Great Britain, Sweden, Finland, France, Italy, Ireland, Belgium and Spain.

Delegates from Turkey, Liechtenstein, Luxembourg, San Marino, Switzerland, West Germany and the Netherlands said they were waiting to hear from their national sports authorities before making a decision.

Norway, whose delegate was delayed because of transportation problems, is the only European country whose Olympic committee has endorsed the boycott.

Under Olympic rules, the national Olympic committees -- and not government -- are empowered to accept or decline invitations to the games. USOC officials have indicated they will support the boycott, but a final decision may not come until as late as May 24, the deadline for entries.

The USOC's Miller, who attended the meeting as an observer only, said the European delegates also decicded not to seek an alternative site to the Moscow Games, but did ask the Moscow Olympics organizing committee to "intercede with its government to make Moscow more suitable and in keeping with the Olympic charter."

There was no discussion of possible competition in a post-Olympic international sports festival, one proposal the Carter administration has offered to take the sting out of U.S. atheletes' by-passing the Games. The plan calls for open competitions to be "clustered" in several countries in late August and early September.

"But there was quite a bit of discussion among some countries about taking other measures (to express their opposition to the Afghanistan invasion)," Miller said. "Switzerland, for example, indicated it would not participate in opening ceremonies and things of that nature."

Similar actions were being discussed in Arlington yesterday, but by the Athlete's Advisory Council to the USOC.

The council's 47 members, after a day long debate, last night approved a "counterproposal" to the administration that would let U.S. athletes compete in Moscow while simultaneously protesting the Soviet military presence in Afghanistan.

The proposal for a "visible, peaceful demonstration" calls for U.S. participation in the Games, during which the athletes would not take part in opening, closing or medal ceremonies; stay in the Soviet Union before or after their events; engage in tourism or leave the Olympic Village and training areas.

The plan was presented to White House aid Bob Berenson last night. Olympic aide Bob berenson last night. Olympic rower Anita DeFrantz, speaking for the athletes, said they hoped to discuss it further with administration officials today or in the near future.

DeFrantz said the atheletes believe this plan would be more effective than a boycott for several reasons, including the "extraordinary opportunity to stage a peaceful demonstration on Soviet soil visible to the entire world."

Although in the works earlier in the day, the proposal was not directly discussed with Joseph Onek, the president's deputy counsel, who met with the council for two hours in the morning. Onek helped brief 97 athletes at the White House Friday when Carter announced that the United States "will not go" to the Moscow Olympics.

Edward G. Williams, chairman of the advisory council, said that, in light of last night's developments, he did not believe the council would take a separate vote on the boycott issue.

The athletes' proposal was made by Andy I. Toro of El Cerrito, Calif., a canoeing coach who participated in two Olympics for Hungary and two for the Unites States.

Toro, who was 16 years old when the Soviets invaded his homeland, said, "A boycott is an effective tool, but what we are proposing would be more effective than doing it elsewhere."

If Americans go to Moscow and refuse to accept medals, he said, "every time a Russian gets a bronze medal, where would be two other empty spaces because the other two didn't show up. How are the Russians going to explain it? We would be able to hit them every day, 24 hours a day, for two weeks. Even the poor peasants will be able to see that and ask what's happening."