| Author | Titles | | 1.
| Sio In Leong | 1 | | 2.
| Siorat, Cyril | 1 | | 3.
| Siouville, A. | 1 | | 4.
| Sioux, Jean-Charles, | 1 | | 5.
| Sip, Jaromír | 3 | | 6.
| Sípek, Borek 1946-2016 | 1 | | 7.
| Sipilä, Jussi | 1 | | 8.
| Sipprell, Clara Estella, 1885-1975 | 1 | | 9.
| Siqueira, 1929-2007 | 0 | | 10.
| Author is: Siqueira, Nuno de, 1929-2007 | 46 | | 11.
| Siqueira, Clarisse | 1 |
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