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.

Week ending	Song	Artist
7 January	Mull of Kintyre	Wings
14 January
21 January
28 January
4 February
11 February
18 February	Figaro	Brotherhood of Man
25 February	Take a Chance on Me	ABBA
4 March	The Rare Auld Times	Danny Doyle
11 March
18 March	Wuthering Heights	Kate Bush
25 March
1 April
8 April	Matchstalk Men and Matchstalk Cats and Dogs	Brian and Michael
15 April
22 April
29 April	Night Fever	The Bee Gees
6 May
13 May
20 May	Rivers of Babylon	Boney M
27 May
3 June
10 June
17 June
24 June	You're the One That I Want	John Travolta and Olivia Newton-John
1 July
8 July
15 July
22 July
29 July
5 August
12 August
19 August	Substitute	Clout
26 August	You're the One That I Want	John Travolta and Olivia Newton-John
2 September	Three Times a Lady	The Commodores
9 September
16 September
23 September	Summer Night City	ABBA
30 September	One Day at a Time	Gloria
7 October	Summer Nights	John Travolta and Olivia Newton-John
14 October
21 October
28 October
4 November	Sandy	John Travolta
11 November	One Day at a Time	Gloria
18 November	Hopelessly Devoted to You	Olivia Newton-John
25 November	Mary's Boy Child – Oh My Lord	Boney M
2 December
9 December
16 December
23 December
30 December

• 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"

See also

• 1978 in music
• Irish Singles Chart
• List of artists who reached number one in Ireland