There are several sources which provide information on upcoming Knowledge Management events, such as conferences, workshops, etc.
This is the events list every KM4Dev member is encouranged to post events which could be of interest to the KM4Dev community.
In addition, some organizations and websites as well as individual KM colleagues are maintaining their own list of KM events:
David Gurteen's list of Annual KM Conferences http://www.gurteen.com/gurteen/gurteen.nsf/id/annual-conferences
David Gurteen's list of specific KM Events http://www.gurteen.com/gurteen/gurteen.nsf/id/annual-conferences
Straitsknowledge Blog http://www.straitsknowledge.com/events
Yahoo Upcoming KM Events http://upcoming.yahoo.com/group/3714
The Knowledge Board http://www.knowledgeboard.com/cgi-bin/course.cgi?page=7
The KMWorld Magazine http://www.kmworld.com/Event/Default.aspx
Knowledge Management Education Hub (KMeduHub)
Stand Garfield's List of KM Conferences http://sites.google.com/site/stangarfield/kmconferences
Curtis Conley's List of KM Conferences http://www.curtisconley.com/?page_id=74&cat=KM+Conferences
SocialMediaBIZ - Calendar of Social Media Conferences http://www.socialmedia.biz/2010/01/21/2010-conferences-social-media-tech-marketing