Galatasaray sport club is the most followed sports team based on the fan count in FB.

Top Facebook Pages, Worldwide, Sports Team

			Fans today	Fans this week	Fans this month	Total Fans
1	LIKE THIS	Galatasaray Sports Team | Turkey	-1,553	-18,869	11,842	3,362,032
2	LIKE THIS	Fenerbahçe Sports Team | Turkey	500	2,640	56,351	2,598,989
3	LIKE THIS	FC Barcelona Sports Team | Spain	4,159	34,361	151,858	2,259,168
4	LIKE THIS	✓ Real Madrid C.F. Sports Team | Spain	8,006	61,772	239,150	1,900,488
5	LIKE THIS	LA Lakers Sports Team | United States	17,186	159,838	458,792	1,529,576

Quoted from: here

How Galatasaray became the world’s No1 sports team on Facebook

By Nick Harris

14 September 2010

The most popular sports team in the world at the moment, according to the number of fans on official Facebook sites, is Galatasaray, with almost 4.5m fans. This is thanks in part to the long-term efforts of the club’s business development manager, Ertuğ Silay, and one of the Facebook page’s key administrators, Umut Öfkeli.

Today sportingintelligence speaks to Ebubekir Kaplan, another key figure at the club responsible for marketing and social network initiatives, to find out how the Turkish giants became so popular in cyberspace, and to ask how important social networking has become as a bridge between clubs and fans.

Regularly updated figures on the world’s most popular sports teams on Facebook (and other social networks) can be found here at famecount.com, the social media statistics specialists (tallies updated daily). Facebook should be considered a significant indicator of trends: one in nine all of adults in the world has a Facebook account, rising to one in two in some major western nations.

Q: When did Galatasaray begin to use social networks, especially Facebook?

A: Galatasaray was the first Turkish club to have an online media presence when we started the official website, www.galatasaray.org, in 1996, showing that we had an early appreciation as a club of the value of online platforms. Turkish supporters also using online tools in every area, especially social networks, and after Facebook became popular in Turkey (from early 2007) our fans began to create their own fans sites on Facebook to support the club. We started to take an interest because it was obviously important to the fans. As Facebook use matured among Galatasaray fans, we created the official club Facebook page on 19 May 2009 (19.05.2009, to echo the year the club was established, 1905.)

We have also official accounts on Twitter, Friendfeed and other social media sites. In Turkey, we have some governmental problems with Youtube, so we can’t reach the site, and that’s the only reason we’re not active there. Instead we use our video site, www.Galatasaray.com, to broadcast our official videos and online TV.

Incidentally, our Twitter account is the first verified sports-related Twitter account in Turkey.

Q: How quickly have you grown on Facebook?

A: 19 May 2009 – launch

19 November 2009 – 1.8m fans

19 May 2010 – 3.2m fans

14 September 2010 – 4.48m fans

Quoted from: here