Top Grossing Romance Movies in 1978
| Rank | Title | Language | Domestic | Worldwide |
|---|---|---|---|---|
| 1 | Grease |  EN | $190,071,103 | $396,271,103 |
| 2 | Heaven Can Wait |  CN | $81,640,278 | $81,640,278 |
| 3 | Coming Home | EN | $32,653,905 | $32,654,046 |
| 4 | House Calls | EN | $28,460,702 | $28,460,702 |
| 5 | Same Time, Next Year | EN | $19,703,082 | $19,703,082 |
| 6 | The One and Only | EN | $16,928,137 | $16,928,137 |
| 7 | The Other Side of the Mountain: Part II | EN | $11,565,678 | $11,565,678 |
| 8 | Moment by Moment | EN | $10,963,824 | $10,963,824 |
| 9 | Comes a Horseman | EN | $9,585,769 | $9,585,769 |
| 10 | Goin' South | EN | $7,435,671 | $7,435,671 |
| 11 | Caravans |  DE | $3,930,501 | $3,930,501 |
| 12 | Days of Heaven | EN | $3,446,749 | $3,493,915 |
| 13 | Days of Heaven | EN | $3,446,749 | $3,492,909 |
| 14 | Our Winning Season | EN | $1,997,705 | $1,997,705 |
| 15 | Langrishe, Go Down | EN | $69,338 | $69,338 |
| 16 | Nest of Vipers |  IT | $27,182 | $27,182 |
| 17 | Girlfriends | EN | - | $8,420 |
| 18 | Thank God It’s Friday | EN | - | $134 |
| 19 | Ice Castles | EN | - | - |
| 20 | An Unmarried Woman | EN | - | - |
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