The Lions are currently ranked 30th in Asia, behind archrivals Malaysia and just in front of Indonesia.
The AFF Suzuki Cup defending champions' early exit from this year's tournament has done them no favours, as they ended the year seven places down from January in 157th place.
This puts them just behind Hong Kong and one spot in front of Curaçao, a Southern Carribbean island with a population of only 150,000.
Singapore have played Hong Kong twice this year in friendly games, drawing 0-0 at Hougang Stadium in September, before losing 2-1 in the return fixture.
Suzuki Cup finalists Malaysia have ended up in exactly the same place as they were in January, moving back to 154th place after dumping Singapore out of the competition at the end of November.
Iran are the highest ranked Asian nation in 51st place, pipping traditional heavyweights Japan (54) and South Korea (69) while Australia (100) just about scraped into the Top 100 after freefalling from 56th place in January.
The Philippines are Southeast Asia's best at 130th place, followed by Vietnam at 137th and Myanmar at 141st.
Meanwhile, a Kiatisuk Senamuang-led Thailand are 142nd in the world after pipping Malaysia 2-0 in the first leg of their AFF Suzuki Cup Final on Wednesday night.
Photo: Weixiang Lim/FourFourTwocomments