- Howard L. Hunter Chemistry Laboratory (Clemson, S.C.)12
- Howard, Frank, 1909-19961
- Howitzers1
- Huffman, John W., 1932-1
- Hunter, H. L. (Howard Louis), 1904-19751
- Hurst, Victor1
- Hybrid computers1
- Hydraulic jacks6
- Hyman, W. H.1
- IPTAY (Organization)1
- Ice skating2
- Industrial Engineering Building (Clemson, S.C.)8
- Industrial Engineering Engine Shop (Clemson, S.C.)7
- Interior walls1
- J. & J. Milliken (Firm)1
- Jarabella (Container ship)1
- Jefferies, Emily Brown, 1921-19751
- Jefferies, Emily McBurney1
- Jefferies, Richard Allan1
- Jefferies, Richard Manning, Jr., 1919-19851