List_of_number-one_singles_of_1978_(Ireland)
This is a list of singles which have reached number one on the Irish Singles Chart in 1978.
- 17 Number Ones
- Most weeks at No. 1 (artist): John Travolta (14), Olivia Newton-John (14)
- Most weeks at No. 1 (song): "You're The One That I Want" - John Travolta and Olivia Newton-John (9)
- Most No.1s: John Travolta (3), Olivia Newton-John (3)
- 4 songs from the film Grease reached No. 1: "You're The One That I Want", "Summer Nights", "Sandy" and "Hopelessly Devoted to You"