People with the last name Hallahan in Indiana
- Adam Hallahan
- Allyson Hallahan
- Chris Hallahan
- Christine Hallahan
- Colleen Hallahan
- Daniel Hallahan
- Diane Hallahan
- Didi Hallahan
- Isabelle Hallahan
- James Hallahan
- Jeremy Hallahan
- Joe Hallahan
- Joseph Hallahan
- Kristen Hallahan
- Lauren Hallahan
- Mary Hallahan
- Matthew Hallahan
- Michael Hallahan
- Michelle Hallahan
- Mike Hallahan
- Patrick Hallahan
- Richard Hallahan
- Robert Hallahan
- Somsiri Hallahan
- Susan Hallahan
- Suzy Hallahan
- Tim Hallahan
- Tracy Hallahan
- William Hallahan
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