The Lions have been boosted by their recent wins but the reigning Suzuki Cup champions are ranked fifth in the AFF region
A 1-0 friendly victory over Laos was followed by a surprise 2-1 defeat of 2012 WAFF Champions Syria on Tuesday night at the Jalan Besar Stadium, and both wins have helped boost the ranking of the Lions.
Singapore however still only rank 29th in the AFC region, one spot above Maldives and just behind India.
Japan are the highest ranked Asian team at 44 followed by Iran (49), Uzbekistan (55), South Korea (56) and Australia (57).
Philippines have overtaken Thailand as AFF's highest ranked team at 137, after their 3-1 win over Pakistan. However, the Azkals suffered a 2-0 loss to Chinese Taipei as well for the period of contention.
Thailand are the second highest AFF team at 143, followed by Myanmar (149), Vietnam (151) and Singapore. Malaysia are meanwhile ranked 160 having climbed one spot following their 1-1 draw with Bahrain.
Football Association of Singapore President Zainudin Nordin had previously stated that Singapore needs to improve their style of play to climb the Fifa rankings but emphasised that it was not necessarily vital to use the rankings to assess a team's capability.
Spain lead the world ranking with Germany, Argentina, Colombia and Belgium round up the top 5. Switzerlanda and England are the most notable movers with the former ranked 7th and the latter breaking the top 10.