Bruce Tog Tognazzini (born 1945) is an American usability consultant and designer. He is a partner in the Nielsen Norman Group, which specializes in human-computer interaction. He was with Apple Computer for fourteen years, then with Sun Microsystems for four years, then WebMD for another four years. He has written two books, Tog on Interface and Tog on Software Design, published by Addison-Wesley, and he publishes the webzine Asktog, with the tagline Interaction Design Solutions for the Real World.