The 1978 Colgate International was a women's tennis tournament played on outdoor grass courts at Devonshire Park in Eastbourne in the United Kingdom.

The event was part of the AA[a] category of the 1978 Colgate Series.

It was the fourth edition of the tournament and was held from 19 June through 24 June 1978.

[2] Second-seeded Martina Navratilova survived a match point in the 2h12m final against first-seeded Chris Evert to win the singles title and earn $14,000 first-prize money.

[2][1][3][4] Martina Navratilova defeated Chris Evert 6–4, 4–6, 9–7 Chris Evert / Betty Stöve defeated Billie Jean King / Martina Navratilova 6–4, 6–7, 7–5