Broadway opened 59 shows in 1970: half of those runs were over within 28 performances. Sleuth, by Anthony Shaffer, broke that pattern, running 1,222 performances, 43.6 times the median.
1970
65 shows opened on Broadway and in the West End in 1970.
Sleuth, by Anthony Shaffer, opened November 12, 1970 at Music Box Theatre and ran 1,222 performances.
Adelphi Theatre closed.
Opened in 1970
UndatedJanuaryFebruaryMarchAprilMayJulySeptemberOctoberNovemberDecember
Undated: 6 openings
| Unknown | 1776 Noël Coward Theatre, London | |
| Unknown | Diana Dors in Three Months Gone Duchess Theatre, London | |
| Unknown | Mame , London | |
| Unknown | Patton Prince Edward Theatre, London | |
| Unknown | The Great Waltz 1972 Theatre Royal, Drury Lane, London | |
| Unknown | Two Mules for Sister Sara Prince Edward Theatre, London |
January: 5 openings
| January 8, 1970 | Camino Real Vivian Beaumont Theater, Broadway | 52 perf. |
| January 12, 1970 | The National Theater of the Deaf Anta Playhouse, Broadway | 8 perf. |
| January 21, 1970 | Watercolor & Criss-Crossing Anta Playhouse, Broadway | 5 perf. |
| January 28, 1970 | Brightower John Golden Theatre, Broadway | 1 perf. |
| January 31, 1970 | Sheep on the Runway Helen Hayes Theatre, Broadway | 105 perf. |
February: 8 openings
| February 2, 1970 | Paris Is Out! Brooks Atkinson Theatre, Broadway | 96 perf. |
| February 3, 1970 | Charles Aznavour Music Box Theatre, Broadway | 23 perf. |
| February 4, 1970 | Gloria and Esperanza Anta Playhouse, Broadway | 13 perf. |
| February 14, 1970 | Gantry George Abbott Theatre, Broadway | 1 perf. |
| February 17, 1970 | Child's Play Royale Theatre, Broadway | 342 perf. |
| February 19, 1970 | Norman, Is That You? Lyceum Theatre, Broadway | 12 perf. |
| February 24, 1970 | Harvey Anta Playhouse, Broadway | 79 perf. |
| February 26, 1970 | Georgy Winter Garden Theatre, Broadway | 4 perf. |
March: 9 openings
| March 10, 1970 | The Chinese and Dr. Fish Ethel Barrymore Theatre, Broadway | 15 perf. |
| March 12, 1970 | Operation Sidewinder Vivian Beaumont Theater, Broadway | 52 perf. |
| March 15, 1970 | Purlie Broadway Theatre, Broadway | 688 perf. |
| March 16, 1970 | Grin and Bare It! / Postcards Belasco Theatre, Broadway | 16 perf. |
| March 22, 1970 | Blood Red Roses John Golden Theatre, Broadway | 1 perf. |
| March 26, 1970 | Minnie’s Boys Imperial Theatre, Broadway | 80 perf. |
| March 29, 1970 | Look to the Lilies Lunt-Fontanne Theatre, Broadway | 25 perf. |
| March 30, 1970 | Applause Palace Theatre, Broadway | 896 perf. |
| March 31, 1970 | Borstal Boy Lyceum Theatre, Broadway | 143 perf. |
April: 7 openings
| April 6, 1970 | Candida Longacre Theatre, Broadway | 8 perf. |
| April 8, 1970 | Cry For Us All Broadhurst Theatre, Broadway | 9 perf. |
| April 14, 1970 | The Boy Friend Ambassador Theatre, Broadway | 111 perf. |
| April 18, 1970 | A Place for Polly Ethel Barrymore Theatre, Broadway | 1 perf. |
| April 22, 1970 | Park John Golden Theatre, Broadway | 5 perf. |
| April 23, 1970 | Inquest Music Box Theatre, Broadway | 28 perf. |
| April 26, 1970 | Company Alvin Theatre, Broadway | 705 perf. |
May: 4 openings
| May 6, 1970 | The Cherry Orchard Anta Playhouse, Broadway | 5 perf. |
| May 14, 1970 | Beggar on Horseback Vivian Beaumont Theater, Broadway | 52 perf. |
| May 21, 1970 | The Engagement Baby Helen Hayes Theatre, Broadway | 4 perf. |
| May 26, 1970 | Wilson in the Promise Land Anta Playhouse, Broadway | 7 perf. |
July: 1 opening
| July 4, 1970 | Charley's Aunt Brooks Atkinson Theatre, Broadway | 9 perf. |
September: 2 openings
| September 14, 1970 | Othello Anta Playhouse, Broadway | 16 perf. |
| September 24, 1970 | Bob and Ray -- The Two and Only John Golden Theatre, Broadway | 158 perf. |
October: 7 openings
| October 5, 1970 | Opium Edison Theatre, Broadway | 8 perf. |
| October 12, 1970 | Conduct Unbecoming Ethel Barrymore Theatre, Broadway | 144 perf. |
| October 19, 1970 | The Rothschilds Lunt-Fontanne Theatre, Broadway | 507 perf. |
| October 20, 1970 | Gandhi Playhouse Theatre, Broadway | 1 perf. |
| October 26, 1970 | Paul Sills' Story Theatre Ambassador Theatre, Broadway | 243 perf. |
| October 27, 1970 | Light, Lively and Yiddish Belasco Theatre, Broadway | 87 perf. |
| October 29, 1970 | Not Now, Darling Brooks Atkinson Theatre, Broadway | 21 perf. |
November: 9 openings
| November 3, 1970 | The President's Daughter Billy Rose Theatre, Broadway | 72 perf. |
| November 5, 1970 | The Good Woman of Setzuan Vivian Beaumont Theater, Broadway | 44 perf. |
| November 9, 1970 | Hay Fever Helen Hayes Theatre, Broadway | 24 perf. |
| November 10, 1970 | Two By Two Imperial Theatre, Broadway | 343 perf. |
| November 12, 1970 | Sleuth Music Box Theatre, Broadway | 1,222 perf. |
| November 15, 1970 | Les Blancs Longacre Theatre, Broadway | 40 perf. |
| November 17, 1970 | Home Morosco Theatre, Broadway | 110 perf. |
| November 18, 1970 | The Castro Complex Stairway Theatre, Broadway | 14 perf. |
| November 23, 1970 | The Candyapple Edison Theatre, Broadway | 1 perf. |
December: 7 openings
| December 11, 1970 | Foreplay Bijou Theatre, Broadway | 38 perf. |
| December 13, 1970 | The Gingerbread Lady Plymouth Theatre, Broadway | 193 perf. |
| December 18, 1970 | The Me Nobody Knows Helen Hayes Theatre, Broadway | 586 perf. |
| December 22, 1970 | A Place Without Doors Stairway Theatre, Broadway | 30 perf. |
| December 22, 1970 | Happy Birthday, Wanda June Edison Theatre, Broadway | 96 perf. |
| December 23, 1970 | Amahl and the Night Visitors/Help, Help, the Globolinks! Anta Playhouse, Broadway | 20 perf. |
| December 28, 1970 | Lovely Ladies, Kind Gentlemen Majestic Theatre, Broadway | 19 perf. |
Closed in 1970
| January 3, 1970 | Indians Brooks Atkinson Theatre, opened 1969 | 96 run |
| January 3, 1970 | Jimmy Winter Garden, opened 1969 | 84 run |
| January 3, 1970 | Mame Winter Garden Theatre, opened 1966 | 1,508 run |
| January 10, 1970 | No Place to Be Somebody Anta Playhouse, opened 1969 | 16 run |
| January 10, 1970 | Three Men on a Horse Lyceum Theatre, opened 1969 | 100 run |
| January 31, 1970 | The Great White Hope Alvin Theatre, opened 1968 | 546 run |
| March 14, 1970 | Play It Again, Sam Broadhurst Theatre, opened 1969 | 453 run |
| May 30, 1970 | Private Lives Billy Rose Theatre, opened 1969 | 198 run |
| October 3, 1970 | Coco Mark Hellinger Theatre, opened 1969 | 329 run |
| October 3, 1970 | Plaza Suite Plymouth Theatre, opened 1968 | 1,097 run |
| November 7, 1970 | Forty Carats Morosco Theatre, opened 1968 | 780 run |
| December 27, 1970 | Hello, Dolly! St. James Theatre, opened 1964 | 2,844 run |