List of 1970 box office number-one films in the United States
# List of 1970 box office number-one films in the United States

This is a list of films which have placed number one at the weekly box office in the United States during 1970 per Variety. The data was based on grosses from 20 to 24 key cities and therefore, the gross quoted may not be the total that the film grossed nationally in the week.

## Number-one films

| # | Week ending | Film | Gross | Notes |
| - | - | - | - | - |
| 1 | January 7, 1970 | On Her Majesty's Secret Service | $1,209,000 | |
| 2 | January 14, 1970 | On Her Majesty's Secret Service | $614,700 | |
| 3 | January 21, 1970 | Butch Cassidy and the Sundance Kid | $500,489 | Butch Cassidy and the Sundance Kid returned to number one after 17 weeks on the chart |
| 4 | January 28, 1970 | Butch Cassidy and the Sundance Kid | $384,598 | |
| 5 | February 4, 1970 | The Secret of Santa Vittoria | $401,500 | The Secret of Santa Vittoria reached number one in its 16th week on the chart |
| 6 | February 11, 1970 | Funny Girl | $795,000 | Funny Girl returned to number one after 73 weeks on the chart |
| 7 | February 18, 1970 | Funny Girl | $596,000 | |
| 8 | February 25, 1970 | Funny Girl | $729,500 | |
| 9 | March 4, 1970 | Funny Girl | $480,750 | |
| 10 | March 11, 1970 | Cactus Flower | $936,200 | Cactus Flower reached number one in its 12th week on the chart |
| 11 | March 18, 1970 | Cactus Flower | $660,500 | |
| 12 | March 25, 1970 | Airport | $741,500 | Airport reached number one in its third week on the chart |
| 13 | April 1, 1970 | Airport | $747,400 | |
| 14 | April 8, 1970 | Marooned | $758,000 | Marooned reached number one in its 17th week on the chart |
| 15 | April 15, 1970 | Butch Cassidy and the Sundance Kid/The Prime of Miss Jean Brodie (double bill) | $650,000 | |
| 16 | April 22, 1970 | Butch Cassidy and the Sundance Kid/The Prime of Miss Jean Brodie (double bill) | $553,000 | |
| 17 | April 29, 1970 | Airport | $502,500 | Airport returned to number one after 8 weeks on the chart |
| 18 | May 6, 1970 | Airport | $426,500 | |
| 19 | May 13, 1970 | The Liberation of L.B. Jones | $532,400 | The Liberation of L.B. Jones reached number one in its eighth week on the chart |
| 20 | May 20, 1970 | Airport | $409,250 | Airport returned to number one after 11 weeks on the chart |
| 21 | May 27, 1970 | Airport | $400,000 | |
| 22 | June 3, 1970 | Bob & Carol & Ted & Alice | $1,064,100 | Bob & Carol & Ted & Alice reached number one in its 34th week on the chart |
| 23 | June 10, 1970 | Bob & Carol & Ted & Alice | $914,100 | |
| 24 | June 17, 1970 | A Man Called Horse | $549,500 | A Man Called Horse reached number one in its seventh week on the chart |
| 25 | June 24, 1970 | Jenny | $380,000 | Jenny reached number one in its 14th week on the chart |
| 26 | July 1, 1970 | Airport | $1,015,000 | Airport returned to number one after 17 weeks on the chart |
| 27 | July 8, 1970 | Beneath the Planet of the Apes | $863,500 | Beneath the Planet of the Apes reached number one in its sixth week of release |
| 28 | July 15, 1970 | Airport | $631,600 | Airport returned to number one after 19 weeks on the chart |
| 29 | July 22, 1970 | Beyond the Valley of the Dolls | $707,000 | Beyond the Valley of the Dolls reached number one in its fifth week on the chart |
| 30 | July 29, 1970 | Patton | $500,600 | Patton reached number one in its 25th week on the chart |
| 31 | August 5, 1970 | Z | $540,000 | Z reached number one its 34th week on the chart |
| 32 | August 12, 1970 | The Out-of-Towners | $550,237 | The Out-of-Towners reached number one in its 11th week on release |
| 33 | August 19, 1970 | Getting Straight | $589,400 | Getting Straight reached number one in its 14th week on the chart |
| 34 | August 26, 1970 | Woodstock | $746,500 | Woodstock reached number one in its 22nd week on the chart |
| 35 | September 2, 1970 | Getting Straight | $568,500 | Getting Straight returned to number one in its 16th week on the chart |
| 36 | September 9, 1970 | On a Clear Day You Can See Forever | $741,500 | On a Clear Day You Can See Forever reached number one in its twelfth week on the chart |
| 37 | September 16, 1970 | On a Clear Day You Can See Forever | $415,100 | |
| 38 | September 23, 1970 | MASH | $463,100 | MASH reached number one in its 34th week on the chart |
| 39 | September 30, 1970 | MASH | $371,700 | |
| 40 | October 7, 1970 | Hello, Dolly! | $345,000 | Hello, Dolly! reached number one in its 42nd week on the chart |
| 41 | October 14, 1970 | The Bird with the Crystal Plumage | $727,200 | The Bird with the Crystal Plumage reached number one in its twelfth week on the chart |
| 42 | October 21, 1970 | C.C. and Company | $532,000 | |
| 43 | October 28, 1970 | The Professionals/In Cold Blood (reissues double bill) | $334,490 | |
| 44 | November 4, 1970 | Trog/Taste the Blood of Dracula (double bill) | $300,000 | |
| 45 | November 11, 1970 | Sunflower | $308,000 | Sunflower reached number one in its seventh week on the chart |
| 46 | November 18, 1970 | Five Easy Pieces | $382,314 | Five Easy Pieces reached number one in its ninth week on the chart |
| 47 | November 25, 1970 | Lovers and Other Strangers | $521,200 | Lovers and Other Strangers reached number one in its 15th week on the chart |
| 48 | December 2, 1970 | Scrooge | $604,100 | Scrooge reached number one in its fourth week on the chart |
| 49 | December 9, 1970 | Lovers and Other Strangers | $515,900 | Lovers and Other Strangers returned to number one in its 17th week on the chart |
| 50 | December 16, 1970 | Scrooge | $475,800 | Scrooge returned to number one in its sixth week on the chart |
| 51 | December 23, 1970 | Scrooge | $555,500 | |
| 52 | December 30, 1970 | Love Story | $983,770 | Love Story reached number one in its second week of release. For the weekend ending December 27, 1970, Love Story grossed $2,363,767 from all markets in the United States and Canada. |
