According to Official Guinness Records,
The most neckties tied with a four-in-hand knot in one minute are 13 and were achieved by Yu Zhenzhen (China) on the set of Zheng Da Zong Yi - Guinness World Records Special in Beijing, China, on 14 November 2008.
For a complete list of 2008 records, please visit 2008 Guinness Records in China.