H. A. Baldwin (fl. c. 1865 - c. 1869) was a New York City based publisher of business directories and tourist guides. Baldwin's Consolidated Business Directory was most likely his most successful enterprise. It combined the directories of three major cities, New York, Boston, and Philadelphia, into a single book. It was sold by subscription from 1866 to 1868 and at one point may have reached a readership of more than 10,000. His other works include a guide to Central Park published in 1866. Little else is known of Baldwin and his work.