The Le Moyne Events Center is a multi-purpose arena in DeWitt, New York, United States, that serves as the home arena for the Le Moyne Dolphins women's basketball and volleyball, and men's basketball teams on the campus of Le Moyne College. The venue is sometimes identified as the Event Center.

The hardwood playing surface within the Events Center is named Ted Grant Court in honor of G. Edward Grant, a member of Le Moyne's inaugural class of 1951. Grant served as a trustee of Le Moyne College from 1981 to 1987, and was a financial supporter of the athletics program. Le Moyne's turf field is also named in his honor.

The initial proposal for the construction of a field house on Le Moyne's campus was floated in 1959. A fundraising drive for construction of new buildings on campus was organized in early 1960. As of spring 1960, nine new structures were planned with a total capital budget of $3.325 million. By fall 1960, plans for a 3,000-seat gymnasium were being formulated with construction expected to begin in spring 1961. The estimated cost of building the gym was $775,000.

In February 1961, final plans for the field house were announced with ground breaking scheduled to take place the following month. The design of the building included a 22,500-square-foot gymnasium along with a spacious lobby for spectators. The maximum seating capacity for basketball was to be 3,000, when portable bleachers were employed. The building was designed to be used as a home arena for intercollegiate sports as well as for intramural sports for both men and women. A press box designed to accommodate journalists as well as radio and television coverage of events in the building was included in the plan. Part of the building was to be set aside for athletic department administration offices. Showers and men's locker rooms for both home and visiting teams would be easily accessible from the court within the building as well as the outdoor baseball and football/soccer fields. A women's lounge and offices for female faculty were to be located on another side of the building. Courts for playing badminton, tennis, handball and squash were to be included along with an eight-lane bowling alley with automatic pin-setting equipment. The steel-frame building with masonry and translucent plastic exterior walls was designed by the architectural firm of Pederson, Hueber, and Hares. The landscape architectural work was done by James E. Glavin. The cost of the building was expected to be $800,000. The building was expected to open with the varsity basketball team playing the Providence Friars on February 5, 1962. The basketball court was intentionally placed on one end of the building rather than in the center, which reduced the capacity by about 2,000 seats, to ensure other activities could be conducted within the building while the basketball court was in use.

In March 1961, Le Moyne hired Dygert Construction Co., Inc. as the general contractor for the building project after the opening of sealed bids. Edward Joy Co. was engaged to perform the electrical, heating and ventilation work, and the Thomas A. Murphy Co. was hired for plumbing.

On October 31, 1961, Bishop Walter A. Foery of Syracuse officiated a ceremony to mark the laying of the cornerstone. Several items were place inside a cornerstone box. These included a small crucifix, a copy of President Kennedy's message on physical fitness, a copy of the October 31, 1961 issue of The Post-Standard, a Le Moyne College catalog, a Le Moyne student handbook, a Le Moyne Dolphins basketball brochure, news releases and data on the building and its construction, photographs of the Le Moyne track and basketball teams, an intramural trophy and a perpetual basketball pass good forever to the finder.

When Le Moyne released its basketball schedule for the 1961–62 season, in October 1961, it was expected that the Events Center would be ready to open for the February 5 game against Providence. However, the following month, it appeared the building would not be completed in time. The last piece of steel for the structure went up three months later than scheduled. It appeared the building was six weeks away from getting heat, which was needed before the basketball court could be installed to prevent warping of the wood. The delays could not be overcome, and the Providence game was played at the West Jefferson Street Armory.

By September 1962, construction of the building was completed with the final price tag coming in at $1 million. Initially, it was referred to as the Le Moyne Athletic Center. A dedication ceremony officially marking the opening of the facility was held on September 16, 1962. The building was given the name Anthony A. Henninger Athletic Center by early 1973, and often called the Henninger Athletic Center.

An addition to the original building was constructed in 1989, at a cost of $4 million. The addition was to house a swimming pool, a gymnasium, racquetball courts, an elevated running track, a fitness room, locker rooms and athletic department offices. Le Moyne students were the intended primary users of a new facilities, and intercollegiate sports would continue to be played in the older gym, except should Le Moyne form a swim team in the future.

The arena underwent a significant renovation in 2016, and reopened on October 12 of that year with an afternoon ceremony and blessing. Later that night, Le Moyne's women's volleyball team won the first event contested at the renovated venue, a 3–2 victory over Roberts Wesleyan.

The first varsity intercollegiate contest in the arena was the Dolphins men's basketball team's season opener against their archrival and conference opponent, Siena, on December 1, 1962. A crowd of 2,100 witnessed the return of former Le Moyne moderator of athletics, Rev. Vincent B. Ryan, S.J., who was on hand to throw out the first ball in a pre-game ceremony. Jim McGrath, who finished with a game-high 19 points, hit a jump shot to give Le Moyne a 2–0 lead and score the first points in a varsity game in the new arena. The Dolphins' pressure defense, led by Tom Cooney, forced Siena into turnovers and fueled the offense, putting Le Moyne in front, 23–15 at the half.

During the intermission, Rev. John J. O'Brien, S.J., who was the current moderator of athletics, introduced Le Moyne's first team, which played Siena in the program's inaugural game in 1948, former team captains and members of the Dolphins' 1,000 career points club. Former players on hand for the festivities included Don Savage, Lou Donahue, Joe Boehm, Bob Hurley, Dave Lozo, Dick Riley, Patsy Leo, Len Mowins, Dick Kenyon, Ron Mack, Denny Morissey, Dick Lynch, John Caveney and Bill Stanley. Syracuse mayor William Walsh was also present.

When the action resumed, the Indians came out flying, opening the second half with a 10–2 run to erase Le Moyne's lead and tie the game at 25 in only five minutes. Siena extended the run to 18–5 to push ahead, 33–28. Midway through the second half, Dick Myers fouled out, the Dolphins trailed 37–33, and Siena appeared to have the momentum. The Indians answered each of Le Moyne's next two baskets with one of their own and led, 41–37, with 3:14 to play. McGrath drew a foul and hit both free throws to cut Siena's lead to two points. After an empty Indians possession, Chris Pitman was fouled and knocked down both shots to tie the game at 41 with just over two minutes to play. Siena's Paul Thorpe missed a layup inside the 1:50 mark, and Pitman grabbed the rebound. The Dolphins froze the ball, holding for the final shot, until Mickey Flynn's 12-footer from the left side fell through the hoop with five seconds left, giving Le Moyne a 6–0 run and a 43–41 lead. The Indians' final desperation shot was blocked by the Dolphins, sealing the Le Moyne victory. Flynn finished the game with nine points.

The varsity game was the nightcap of a doubleheader that opened with Le Moyne's freshman team defeating Powelson Business Institute, 65–47. Tony McCann led the Dolphin Cubs with 22 points, while Gary DeYulia and Tom Mullen each added 13 points.

The 2016 renovation enabled the venue to be used in three different configurations, each with a different maximum seating capacity. Configuration A produces a maximum capacity of 2,637. It includes full chair-back seating on both the north and south sides of the building, portable bleachers on the east side, and chairs assembled on the floor with the stage at the west end of the building. This is the basic configuration used for basketball games, except for the chairs on the court. There is a second set of portable bleachers that can be used at the east end of the building, when there is no stage, such as is the case with basketball games. Therefore, the maximum capacity for basketball is slightly different from the standard Configuration A maximum capacity.

Configuration B produces a maximum capacity of 1,705, using the full chair-back seating on either the north or south side with the stage opposite those seats and additional chairs assembled on the floor.

Configuration C produces a maximum capacity of 685, using seating on either the north or south side with the stage in the middle of the floor.

The Events Center hosted regional games of the 1965 and 1966 and 1969 NCAA College Division basketball tournaments.

The 1968 Amateur Athletic Union junior national boxing championships were staged in the arena.

Men's basketball contests of the 1980 Empire State Games were played in the Events Center.

The following entertainers have performed at the Events Center:

• The Smothers Brothers on November 8, 1963.
• The Beach Boys headlined a concert held in the venue on November 18, 1967. Other acts performing included Strawberry Alarm Clock, the Soul Survivors and Buffalo Springfield. The Pickle Brothers provided comedy during the show.
• The Guess Who in October 1970.
• Jackson Browne and Linda Ronstadt on March 6, 1974.
• Harry Chapin, Pete Seeger and David Bromberg on April 7, 1976.
• Orleans on September 17, 1976.
• Dickey Betts, Nils Lofgren and Steve Gibbons on April 14, 1977.
• The J. Geils Band on September 18, 1977.
• Firefall and Bryan Bowers on April 13, 1978.
• Pousette-Dart Band on April 29, 1979.
• Garrett Morris on February 24, 1983.
• John Cafferty and the Beaver Brown Band on October 17, 1984.
• Dennis Miller on March 1, 1990.
• Sweet Honey in the Rock on March 10, 1990.
• Edie Brickell & New Bohemians on November 15, 1990.

• List of NCAA Division I basketball arenas