Universal's dancing queens added $5.9m this weekend through UPI from 3,789 locations in 49 territories to reach $400.1m.
In so doing became it became Universal's second biggest international release behind Jurassic Park.
It is now the fourth biggest overseas hit of the year-to-date behind Indiana Jones And The Kingdom Of The Crystal Skull on $466m, The Dark Knight on $464m and Kung Fu Panda on $418m.
This weekend Mamma Mia! opened at number one in Chile, Peru and Egypt and enjoyed a solid $1.4m hold in its third weekend in Italy from 284 venues to raise the tally to $7.5m.
In the UK the film added $620,000 (£360,000) from 331 sites in its 15th weekend to reach a sensational $126.1m (£65.8m) running total and is poised to overtake Harry Potter And The Philosopher's Stone's £66.1m total and become the second biggest release in the UK behind Titanic on £69m.
South Korea has generated $23.3m and Germany stands at $38.2m. There are four territories to go including Japan on January 30, 2009.