Northern Ireland have risen seven spots in the Fifa rankings to 37th position following last month's 0-0 draw against Romania in their Euro 2016 group.
The draw kept Michael O'Neill's side on target for qualification for next year's European Championship finals.
The Republic of Ireland have moved up eight places following the friendly draw against England and Euro qualifier draw against Scotland.
Wales improve 12 spots to 10th with England ninth and Scotland 29th.
England moved up six positions helped by their 3-2 Euro 2016 qualifier win in Slovenia while Wales enter the world's top 10 for the first time following their win over Belgium last month.
Wales are three points clear at the top of Group B with four games remaining as they bid to reach their first major finals since 1958.
Northern Ireland's home draw against the Group F leaders on 13 June left them a point behind the Romanians but still in the second spot which would book them an automatic place in next year's finals in France.
With four games remaining, O'Neill's side are two points ahead of Hungary in what has developed into a three-team battle for the two automatic qualifying places.
Northern Ireland's highest ever position in the rankings was 27th spot which they occupied in August 2007 and from April to June 2009.
Their lowest ranking was 129th which they plummeted to in September 2012 seven months into Michael O'Neill's reign.