Barbara Ann Kipfer (born 1954) is a linguist and lexicographer. She has written more than 45 books, including 14,000 Things to be Happy About (Workman), which has more than a million copies in print and has given rise to many Page-a-Day calendars. She was the editor of the sixth edition of Roget's International Thesaurus. She lives in Ivoryton, Connecticut.
She holds a PhD and MPhil in Linguistics from the University of Exeter, a PhD in Archaeology from Greenwich University, an MA and PhD in Buddhist Studies also from Akamai University, and a BS in physical education from Valparaiso University. She is lexicographer for Wolfram Alpha. Kipfer has worked for such companies as Dictionary.com, Thesaurus.com, Reference.com, Answers.com, Ask Jeeves, idealab, Mindmaker, General Electric Research, IBM Research, Wang, Bellcore (Telcordia), Cymfony, Textwise, and Knowledge Adventure.