- Kammen, F. vander: 1542.
- Keerberghe, J.: 1117.
- Keerberghen (Keerbergen), Pieter [van] (publisher in Antwerp): 712, 713, 714, 715, 2138, 2186.
- Keere, Hendrik van [den] (the Elder) (publisher in Ghent): 41.
- Keere, Hendrik van [den] (the Younger) (publisher and type-cutter in Ghent): 589, 1277, 1675.
- Kelft (or Kelst), Isebrant van (compositor in the Plantin Press): 58, 725.
- Kellinghausen, Christophorus: 2125, 2126, 2127.
- Kelst, Isebrant van: see Kelft, Isebrant van.
- Kemp, Theodoor (proof-reader in the Plantin Press): 644 (Notes).
- Kerckhove, Cornelius van de: 1669.
- Kerkhovius, Pieter (Pierre): 1081, 1180, 1488, 2410.
- Kerle, Jacobus de: 1498 .
- Kerver, Jacques (publisher in Paris): 1704, 2468.
- Keyser, M[aarten] de (printer in Antwerp): 1128; Add. 1183.
- Keysere, A. de (publisher in Ghent): 739.
- Khefuhillerus, Joannes: 2169.
- Khreutter, Joannes: 573.
- Kieffel (Kieffelt, Kiffelt), G. (or I.) (clerk of the city of Antwerp): 70, 71, 98, 99, 100, 107, 133, 135, 146, 148, 149, 152, 153, 154, 158, 160, 161, 162, 165, 166, 167, 170, 171, 173, 175, 176, 180, 181, 186, 190, 199, 204, 206, 207, 209, 210, 211, 214, 215, 216, 218, 220, 223, 225, 226, 227, 228, 231, 232, 234, 235, 238, 239, 241, 243, 245, 246, 247, 249, 252, 254, 255, 256, 257, 258, 259, 261, 262, 269, 270, 271, 272, 273, 274, 275, 279, 280, 281, 286, 292, 389, 390, 418, 423, 426, 464, 465, 476, 481, 483, 484, 491, 493, 503, 516, 517, 530, 534; Add. 517bis.
- Kilianus (Kiliaan), Cornelis: 644 (Notes), 1011, 1082, 1499, 1500 , 1617, 2104, 2310.
- Kimpe, I. de: 2035.
- Kinckius (publisher in Cologne): 2361.
- Kolben, Andreas (publisher in Marburg): 2225.
- Koornhert: see Coornhert.
- Kyspenningius (Kyspenning), Henricus: 1501 .