List of Hot 100 number-one singles of 2011 (Japan)
This is a list of number one singles on the Billboard Japan Hot 100 chart in Japan in 2011. The week's most popular songs in Japan, ranked by the Hanshin Corporation and based on radio airplay measured by Plantech and sales data as compiled by SoundScan Japan. Chart history

References

External links 
 Current Japan Hot 100 on billboard-japan.com  by Hanshin Contents Link

2011 in Japanese music
Japan Hot 100
Lists of number-one songs in Japan