The best marketing conferences to attend in 2013. Feel free to add in any additional conferences we left out for 2013 in the comments section below.
- Social Media Strategies Conference February 5-7 in Las Vegas, NV, Chicago in April and New York in June
- Online Marketing Summit February 11-13 in San Diego, CA and Fall, 2013 in New York, NY
- Marketing Sherpa E-Mail Summit February 19-22 in Las Vegas, NV
- SXSW Interactive March 8-12 in Austin, TX
- Digital Media Summit March 19-20 Toronto, ON
- Search Engine Strategies (SES) March 25-28 in New York, NY and September 10-14 in San Francisco, CA
- Inbound Marketing Summit April 3-4 in New York, NY
- Ad:Tech Digital Marketing Conference April 9-10 in San Francisco
- DemandCon April 15-16 in San Francisco, CA and October in Boston, MA
- Forrester Forum for Marketing Leadership April 18-19 in Los Angeles, CA
- World Social Marketing Conference April 21-23 in Toronto, ON
- B2B Content2Conversion April 22-23 in New York, NY
- iStrategy Global Digital & Social Media Conference April 23 -24 in Miami, FL
- Event Marketing Summit May 6-8 in Chicago, IL
- Sirius Decisions 2013 May 8-10 in San Diego, CA
- Business Marketing Association May 29-31 in Chicago, IL
- Confab Content Strategy conference June 3-5 in Minneapolis, MN
- SES Toronto June 12-14 in Toronto, ON
- Inbound Marketing Movement August 19-22 in Boston, MA
- Content Marketing World 2013 Sept 9-12 in Cleveland, OH
- Brand ManageCamp Sept 16-17 in Las Vegas, NV
- ANA: Master of Marketing Conference October 3-6 in Phoenix, AZ
- MarketingProfs B2B Marketing Forum October 10-11 in Boston, MA
- Direct Marketing Association October 12-17 in Chicago, IL
- Pivot Conference October 15-16 in New York, NY


What a great list! Thank you for compiling!