| 801 | Quintilien (0030?-0100?) | [De l'institution oratoire. latin. 1549] De institutione oratoria libri XII | 1549 |
| 802 | Quintin, Jean (1500-1561) | Juris Analecta In tit. De verborum significatione, libro .V. Decretal. Grego. IX. | 1544 |
| 803 | Raban Maur (0780-0856?) | In Ecclesiasticum Commentarii | 1544 |
| 804 | Raulin, Jean (1443-1514) | Sermones de eucharistia | 1519 |
| 805 | Raulin, Jean (1443-1514) | Sermonum de festivitatibus sanctorum totius anni | 1524 |
| 806 | Raymond de Peñafort (saint, 1175?-1275) | Summula ♦ septem sacramenta ecclesiastica... complectens | 1516 |
| 807 | Rebuffi, Pierre (1487-1557) | De Scolasticorum bibliopolarum | 1540 |
| 808 | Restauld de Caligny, Alain (15..-1565) | Institutiones Hebraicæ | 1545 |
| 809 | Ricard de Montcroix (1242?-1320) | Contra sectam Mahumeticam | 1511 |
| 810 | Ricchieri, Ludovico (1469-1525) | Antiquarum lectionum commentarios sicuti... reparavit L.C. Rhodiginus | 1517 |
| 811 | Ricci, Agostino (14..-15..) | De motu octavae sphaerae | 1521 |
| 812 | Richard de Saint-Victor (1110?-1173) | Omnia opera in unum volumen congesta | 1518 |
| 813 | Richard Fitz Ralph (1295?-1360) | Summa in questionibus Armenorum | 1512 |
| 814 | Richer, Christophe (1513?-1553) | De rebus Turcarum | 1540 |
| 815 | Rimbertinus, Bartholomaeus (1402?-1466) | Insignis atque preclarus De deliciis sensibilibus paradisi Liber | 1514 |
| 816 | Ringelberg, Joachim Fortius (1499?-15..) | Rhetorica | 1543 |
| 817 | Rolevinck, Werner (1425-1502) | [Fasciculus temporum. latin. 1518 ca] Fasciculus temporum omnes antiquorum cronicas succincte complectens | 1518 |
| 818 | Rosset, Pietro (15..?-15..?) | Christus | 1543 |
| 819 | Rosset, Pietro (15..?-15..?) | ♦ Paulus | 1522 |
| 820 | Royaert, Jan (1476?-1547) | Homiliæ in Evangelia dominicalia… Pars Hyemalis | 1550 |
