Domestic Box Office For May 2018
| Rank | Release | Gross | Max Th | Opening | % of Total | Open Th | Open | Close | Distributor |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Deadpool 2 | $318,491,426 | 4,349 | $125,507,153 | 39.4% | 4,349 | May 18 | Oct 18 | Twentieth Century Fox |
| 2 | Solo: A Star Wars Story | $213,767,512 | 4,381 | $84,420,489 | 39.5% | 4,381 | May 25 | Sep 20 | Walt Disney Studios Motion Pictures |
| 3 | Book Club | $68,566,296 | 3,169 | $13,582,231 | 19.8% | 2,781 | May 18 | Aug 9 | Paramount Pictures |
| 4 | Life of the Party | $53,059,911 | 3,656 | $17,886,075 | 33.7% | 3,656 | May 11 | Aug 2 | Warner Bros. |
| 5 | Overboard | $50,316,123 | 2,006 | $14,711,101 | 29.2% | 1,623 | May 4 | Jul 5 | Pantelion Films |
| 6 | Breaking In | $46,840,590 | 2,537 | $17,630,285 | 37.6% | 2,537 | May 11 | Aug 2 | Universal Pictures |
| 7 | Show Dogs | $17,857,020 | 3,212 | $6,023,972 | 33.7% | 3,212 | May 18 | Oct 11 | Global Road Entertainment |
| 8 | RBG | $14,017,361 | 432 | $578,470 | 4.1% | 34 | May 4 | Oct 11 | Magnolia Pictures |
| 9 | Tully | $9,369,755 | 1,356 | $3,282,610 | 35% | 1,353 | May 4 | Jul 5 | Focus Features |
| 10 | First Reformed | $3,448,256 | 334 | $97,562 | 2.8% | 4 | May 18 | Aug 2 | A24 |
| 11 | Bad Samaritan | $3,435,047 | 2,007 | $1,726,868 | 50.3% | 2,007 | May 4 | May 24 | Electric Entertainment |
| 12 | 2001: A Space Odyssey 2018 Re-release | $3,236,321 | 13 | $202,759 | 6.3% | 4 | May 18 | Jul 15 | Warner Bros. |
| 13 | Pope Francis: A Man of His Word | $2,008,385 | 385 | $507,870 | 25.3% | 346 | May 18 | Sep 30 | Focus Features |
| 14 | 102 Not Out | $1,343,797 | 102 | $483,681 | 36% | 102 | May 4 | Jun 7 | Sony Pictures Releasing |
| 15 | The Seagull | $1,252,960 | 211 | $79,016 | 6.3% | 6 | May 11 | Aug 16 | Sony Pictures Classics |
| 16 | Nothing to Lose | $1,016,188 | 69 | $679,531 | 66.9% | 69 | May 11 | Jun 14 | Swen Releasing |
| 17 | Like Arrows | $817,990 | 818 | - | - | - | May 1 | May 3 | Fathom Events |
| 18 | Beast | $800,365 | 93 | $53,248 | 6.7% | 4 | May 11 | Jul 5 | Roadside Attractions |
| 19 | How Long Will I Love U | $746,933 | 32 | $204,733 | 27.4% | 23 | May 25 | Jun 28 | Well Go USA Entertainment |
| 20 | On Chesil Beach | $745,971 | 203 | $35,765 | 4.8% | 4 | May 18 | Jul 12 | Bleecker Street Media |
| 21 | Puffs: Filmed Live Off Broadway | $464,483 | 687 | $232,863 | 50.1% | 606 | May 9 | May 12 | Fathom Events |
| 22 | Porco Rosso 2018 Re-release | $443,059 | 755 | $156,270 | 35.3% | 734 | May 20 | May 23 | Fathom Events |
| 23 | The Gospel According to André | $400,713 | 36 | $47,802 | 11.9% | 4 | May 25 | Aug 16 | Magnolia Pictures |
| 24 | Mountain | $365,412 | 35 | $6,067 | 1.7% | 1 | May 11 | Aug 9 | Greenwich Entertainment |
| 25 | Sunset Boulevard 2018 Re-release | $299,645 | 666 | $169,067 | 56.4% | 628 | May 13 | May 16 | Fathom Events |
| 26 | Andy Irons: Kissed by God | $285,933 | 495 | - | - | - | May 25 | May 31 | Fathom Events |
| 27 | Summer 1993 | $185,903 | 19 | $21,307 | 11.5% | 4 | May 25 | Sep 27 | Oscilloscope |
| 28 | The Guardians | $177,331 | 10 | $7,479 | 4.2% | 1 | May 4 | Sep 13 | Music Box Films |
| 29 | Always at The Carlyle | $174,251 | 23 | $9,239 | 5.3% | 1 | May 11 | Jul 15 | Good Deed Entertainment |
| 30 | Boom for Real: The Late Teenage Years of Jean-Michel Basquiat | $166,616 | 14 | $22,717 | 13.6% | 2 | May 11 | Jul 26 | Magnolia Pictures |
| 31 | A Chance in the World | $112,007 | 497 | - | - | - | May 30 | May 30 | Fathom Events |
| 32 | Lu Over the Wall | $109,857 | 97 | $60,773 | 55.3% | 97 | May 11 | Jun 28 | GKIDS |
| 33 | Mary Shelley | $108,900 | 30 | $12,570 | 11.5% | 2 | May 25 | Jul 8 | IFC Films |
| 34 | Filmworker | $102,609 | 17 | $7,984 | 7.8% | 1 | May 11 | - | Kino Lorber |
| 35 | Revenge | $102,091 | 37 | $45,924 | 45% | 37 | May 11 | May 31 | Neon |
| 36 | National Theatre Live: Macbeth | $97,857 | 502 | - | - | - | May 17 | May 17 | Fathom Events |
| 37 | Champion | $97,472 | 29 | $17,095 | 17.5% | 2 | May 11 | Jun 7 | Well Go USA Entertainment |
| 38 | Godspeed: The Race Across America | $96,690 | 514 | - | - | - | May 22 | May 22 | Fathom Events |
| 39 | How to Talk to Girls at Parties | $84,809 | 103 | $12,674 | 14.9% | 2 | May 25 | Jun 14 | A24 |
| 40 | The Boxcar Children - Surprise Island | $78,676 | 699 | - | - | - | May 8 | May 8 | Fathom Events |
| 41 | American Dream: Detroit | $55,092 | 421 | - | - | - | May 15 | May 15 | Fathom Events |
| 42 | Digimon Adventure tri. Part 5: Coexistence | $52,339 | 393 | - | - | - | May 10 | May 10 | Fathom Events |
| 43 | The Snowman Trek | $51,743 | 350 | - | - | - | May 17 | May 17 | Fathom Events |
| 44 | The Royal Wedding: Prince Harry and Meghan Markle | $50,264 | 194 | $50,264 | 100% | 194 | May 19 | May 19 | Fathom Events |
| 45 | Racer and the Jailbird | $46,337 | 48 | $2,513 | 5.4% | 2 | May 4 | May 17 | Super LTD |
| 46 | Gray Matter | $38,034 | 12 | $14,064 | 37% | 12 | May 18 | Jun 14 | Indican Pictures |
| 47 | That Summer | $34,556 | 5 | $5,977 | 17.3% | 1 | May 18 | - | IFC Films |
| 48 | Sollers Point | $32,608 | 4 | $10,618 | 32.6% | 1 | May 11 | Jun 21 | Oscilloscope |
| 49 | Goodland | $32,140 | 3 | $17,621 | 54.8% | 2 | May 11 | - | Parade Deck Films |
| 50 | The Desert Bride | $30,110 | 4 | $2,127 | 7.1% | 2 | May 4 | Aug 23 | Strand Releasing |
| 51 | The Misandrists | $26,123 | 5 | $3,278 | 12.5% | 1 | May 25 | Aug 2 | Cartilage Films |
| 52 | The Day After | $24,746 | 6 | $3,727 | 15.1% | 1 | May 11 | Aug 19 | The Cinema Guild |
| 53 | Ganja & Hess | $21,197 | 8 | $3,406 | 16.1% | 1 | May 30 | Nov 1 | Kino Lorber |
| 54 | Who We Are Now | $19,128 | 3 | $5,188 | 27.1% | 1 | May 25 | Jun 21 | FilmRise |
| 55 | Anything | $19,037 | 27 | $4,110 | 21.6% | 3 | May 11 | Jun 7 | Paladin |
| 56 | The Escape | $14,018 | 29 | - | - | - | May 11 | May 24 | IFC Films |
| 57 | The Most Unknown | $12,119 | 2 | $2,905 | 24% | 1 | May 18 | Jun 14 | Abramorama |
| 58 | The Terrible Parents | $11,818 | 1 | $5,332 | 45.1% | 1 | May 25 | Jun 10 | Cohen Media Group |
| 59 | The Assassin's Code | $11,218 | 12 | $11,218 | 100% | 12 | May 11 | - | Gravitas Ventures |
| 60 | Class Rank | $10,452 | 14 | - | - | - | May 11 | - | Cinedigm Entertainment Group |
| 61 | Strangers on the Earth | $9,518 | 2 | $3,768 | 39.6% | 1 | May 4 | Jun 3 | First Run |
| 62 | I Am MLK Jr. | $5,918 | 2 | - | - | - | May 3 | - | GathrFilms |
| 63 | Edward II 2018 Re-release | $4,826 | 1 | $1,701 | 35.2% | 1 | May 4 | May 17 | Film Movement |
| 64 | Altered Perception | $1,259 | 10 | - | - | - | May 4 | - | Cinedigm Entertainment Group |
| 65 | Two Men Went to War 2018 Re-release | $1,227 | 1 | $185 | 15.1% | 1 | May 25 | - | Indican Pictures |
| 66 | Higher Power | $528 | 3 | $299 | 56.6% | 3 | May 11 | May 17 | Magnolia Pictures |
