The Hilliard Mixed Pairs national bridge championship was last held at the spring American Contract Bridge League (ACBL) North American Bridge Championship (NABC).
This was the original national mixed pairs event. It was contested at the summer NABC the first two years. It moved to the fall NABC in 1933 until it was replaced by the Rockwell Mixed Pairs in 1946. However, it continued to be contested at Bridge Week until 1957. It was contested at the newly created Spring NABC from 1958 to 1962[citation needed] .
When this was the premier event for mixed pairs, before 1946, no pair defended its title successfully, or even won the trophy twice. Only a few players won it twice. Two pairs did win the Hilliard trophy more than once after it was downgraded in status: Kay and James Dunn, three times, Helen and Morris Portugal twice, all during the five-year span 1951 to 1955. Mary Jane and Arnold Kauder won in 1949 and finished second in 1950 and 1957. Married couples did not generally dominate the event, however.
All listings are "ladies first".
| Year | Winners | Runners-up |
|---|---|---|
| 1931 | Mrs. Jay S. Jones Jr., Lewis R. Ayres | Elinor Murdoch, Oswald Jacoby |
| 1932 | Frances B. Newman, Charles Lochridge | Mrs. Evelyn C. Kaiser, B. Jay Becker |
| 1933 | Margaret Wagar, Fred Levy | Helen White, J. C. McClelland |
| 1934 | Mrs. Theodore Greenbaum, Richard Kahn | Sally Young, Charles Goren |
| 1935 | Hortense Evans, Louis J. Haddad | Florence Stratford, Maury J. Glick |
| 1936 | Mrs. D. M. Healy, Wingate Bixby | Mrs. L. Heiner, Arthur Glatt |
| 1937 | Mrs. Sam Rush, Harry Fishbein | Mrs. H. E. Latter, Jesse Slutt |
| 1938 | Mrs. Sam Rush, Fred Kaplan | Lottie Zetosch, Robert Appleyard |
| 1939 | Florence Stratford, Lewis H. Fremont | Louise Wainwright, Oswald Jacoby |
| 1940 | Sally Young, Sidney Silodor | Helen Sobel, Robert A. McPherran |
| 1941 | Vera Glick, Jeff Glick | Ann Bryant, Harry Feinberg |
| 1942 | Ruth Sherman, Harry Fishbein | Olive Peterson, John R. Crawford |
| 1943 | Olive Peterson, Charles Goren | Peggy Golder, Charles J. Solomon |
| 1944 | Helen Sobel, Sidney Silodor | Josephine Gutman, Peter Leventritt |
| 1945 | Margaret Wagar, John R. Crawford | Marjorie Perlmutter, Irving Deuter |
| After 1945 this Hilliard Trophy event was replaced as North American mixed pairs championship by the Rockwell Mixed Pairs. | ||
| 1946 | Paula Bacher, Harry Fishbein | Mrs. Norman Perlstein, Norman Perlstein |
| 1947 | Betty Bysshe, Meyer Schleifer | Helen Cale, Jack Ehrlenbach |
| 1948 | Verna Leonard, E. Miller | Harriet Rethers, Dan Westerfield |
| 1949 | Mary Jane Kauder, Arnold Kauder | Mrs. H. J. Murphy, H. J. Murphy |
| 1950 | Venita Street, Robert Street | Mary Jane Kauder, Arnold Kauder |
| 1951 | Helen Portugal, Morris Portugal | Allyn G. Whitehead, Dan Westerfield |
| 1952 | Kay Dunn, James Dunn | Malvine Klausner, Edward Frischauer |
| 1953 | Helen Portugal, Morris Portugal | Mrs. Harry Bierman, Harry Bierman |
| 1954 | Kay Dunn, James Dunn | Mrs. M. Lorber, E. Hatcher |
| 1955 | Kay Dunn, James Dunn | Hortense Evans, Barry Crane |
| 1956 | Ruth Million, John Hancock | Jan Stone, Tobias Stone |
| 1957 | Marilyn Johnson, Bob Adams | Mary Jane Kauder, Arnold Kauder |
| After 1957 the Hilliard Trophy event was restored to North American championship status, but secondary to the Rockwell. | ||
| 1958 | Phyllis Novak, John Gerber | Jane Clunie, Dr. William A. Clunie |
| 1959 | Mary Jane Farell, Al Roth | 2/3. Eugenie Mathe, Lew Mathe 2/3. Clara Watanabe, Ivan Erdos |
| 1960 | Shirlee Harris, Ed Rosen | Mrs. Benton Brandon, John E. Simon |
| 1961 | Carol Sanders, Tommy Sanders | Hermine Baron, Robert F. Jordan |
| 1962 | 1/2. Shirlee Harris, Ed Rosen 1/2. Jesse Cook, Grant Marsee | |