| Puccinia hiascens Arthur, 1920 |
| Puccinia hieracii (Röhl.) H. Mart., 1817 |
| Puccinia hieracii var. hieracii (Röhl.) H. Mart., 1817 |
| Puccinia hydrocotyles (Mont.) Cooke, 1880 |
| Puccinia hyptidis-mutabilis Mayor, 1913 |
| Puccinia ibrae J. F. Hennen & J. W. McCain, 1994 |
| Puccinia impedita Mains & Holw., 1918 |
| Puccinia imperspicua P. Syd. & Syd., 1902 |
| Puccinia inanipes Dietel & Holw., 1901 |
| Puccinia inclusa P. Syd. & Syd., 1902 |
| Puccinia inclusa var. inclusa P. Syd. & Syd., 1902 |
| Puccinia inclusa var. mexicana Savile, 1970 |
| Puccinia infrequens Howl., 1905 |
| Puccinia insignis Howl., 1904 |
| Puccinia interjecta H. S. Jacks., 1932 |
| Puccinia intumescens (P. Syd. & Syd.) Holw., 1907 |
| Puccinia invaginata Arthur & J. R. Johnst., 1918 |
| Puccinia investita Schwein., 1832 |
| Puccinia iostephanes Dietel & Holw., 1901 |
| Puccinia iridis Wallr., 1844 |