A handful of top Reagan administration officials, including Defense Secretary Caspar W. Weinberger, have found a way to mix business with pleasure this weekend when they travel to California for the annual sylvan gathering of the all-male Bohemian Club, Pentagon officials said yest Weinberger, two other top Pentagon officials, Navy Secretary John F. Lehman Jr. and research chief Richard D. DeLauer, and White House national secuairs adviser William P. Clark will pay what Pentagon spokesmen called a morale-boosting visit to the Naval Supand before repairing to the Bohemian Grove north of San Francisco. Because of the business nature of the trip to the supply center, they will travel aboard a government jet.

The Bohemian Club, which has caused controversy in the past because it does not admor hire women, boasts some of the nation's top industrial and political leaders among its members. In additioney include President Reagan, Vice President Bush and Attorney General William French Smith, who was criticizedrs during his confirmation hearings for not resigning from the club.

Each year, more than 2,000 men flock t700-acre grove along the Russian River for a few days of frolic and relaxation away from the cares, and reportay world.

A spokesman confirmed Clark is planning to make the trip.