- Dana Daniels Comedian, Entertainment, Magician, Success
- Roman Danylo Comedian, Emcee
- Jeff Davidson (MBA, CMC) Time Management, Life Balance, Stress Management, Motivation,
- Ritch Davidson Team Building, Humor, Stress, Human Resources, Creativity
- Bob Davies Motivation, Inspiration, Goal Setting
- Josh Davis Athletics / Sports, Family, Olympics
- Phyllis Davis Business Etiquette, Performance Improvement, Ethics, Corporate Culture
- Seth Davis Motivation, Athletics/Sports, Media/Broadcast/Print
- Dominique Dawes Olympics, Motivation, Achievement/Peak Performance, Inspiration
- Roger Dawson (CSP, CPAE) Negotiation, Sales, Peak Performance, Training
- Doug Dayton Technology, Marketing, Internet, Ecommerce, Customer Service, Sales
- Gary De Rodriguez Emotional Intelligence,Life Change,Motivational, Inspiration, Life Balance, Corporate Training
- Mark DeVolder (Dr.) Team building, Motivation, Leadership, Sales, Communication
- Ronald Dellums Cross-Cultural Issues, Diversity, Government / Politics, Leadership
- Scott Deming Branding, Sales, Marketing, Communications, Customer Service
- Kathy Dempsey Inspiration, Nursing, Health, Personal Improvement
- Harry Dent, Jr. (MBA) Future, Economics, Technology, Investment, Change
- Susan Dentzer Journalism, Healthcare Future, Healthcare Management, Media/Broadcast/Print
- John Di Frances (PMC) Leadership, Innovation, Business, Change, Ethics, Corporate Culture, Customer Service, Creativity, Negotiation, Strategic Planning
- Joseph DiVanna Economics, Business, Globalization
- Connie Dieken- onPoint Communication Communication, Media, Leadership, Business, Performance
- E.J. Dionne Civil/Human Rights, Politics, International Relations, Journalism
- Mike Ditka Motivation, Athletics / Sports, Leadership
- Mitchell Ditkoff Creativity, Innovation, Leadership, Team Building
- Michael Djavahery ( Ph.D., ACI, MH, CCHT) Hypnosis, Motivation, Success, Stress, Leadership, Change,Presentation Skills
- John Patrick Dolan Law, Negotiation, Media/Broadcast/Print
- Bob Dole Global Affairs, Government / Politics, Conservative Politics, Inspiration, Leadership
- Jason Dorsey Team Building, Performance Improvement, Human Resources, Employee Relations
- Rita Dove Arts / Music / Drama, Culture, Diversity, Inspiration
- Tony Dow Celebrity, Entertainment
- Hugh Downs Media / Broadcast / Print, Health, Family, Relationships, Journalism
- Tom Dreesen Comedian, Emcee, Entertainment
- Mary-Ellen Drummond Communication, Success, Customer Service, Leadership
- Mack Dryden Motivation, Inspiration, Entertainment, Humor, Comedian, Emcee
- Martin Dube Comedian, Entertainment
- Olympia Dukakis Arts / Music / Drama, Diversity, Entertainment, Inspiration, Women's Issues
- Christine Dumas Health, Healthcare, Fitness, Media / Broadcast / Print
- Dayton Duncan Arts / Music / Drama, Journalism, Media / Broadcast / Print
- Jeff Dunham Variety, Entertainment, Comedian
- Dominick Dunne Journalism, Media / Broadcast / Print, Arts / Music / Drama
- John C. Dvorak Computers, Internet, Technology
- Ken Dychtwald (Ph.D) Future, Seniors, Human Resources, Labor Relations, Health/ Management, Health
- Maddy Kent Dychtwald Marketing, Sales, Advertising /Public Relations, Children/Youth, Future
- Wayne Dyer Empowerment, Psychology, Motivation,
- Dr. Joachim de Posada (Ph.D.) Hispanic/Latino, Leadership, Productivity, Sales, Success
- M. Kay duPont Communication, Diversity, Training, Gender, Business Etiquette