- Rapkin, John, active 1845-18511
- Ravenstein, Ernst Georg, 1834-19131
- Royal Geographical Society (Great Britain)1
- Sanson, Nicolas, 1600-16671
- Sarvodaya Service Corporation, New Delhi.1
- Sarvodaya Service Corporation.1
- Schenk , Pieter, 1698-1775.1
- Schley, Jacobus van der, 1715-17791
- Scott, Andrew. Waugh. Survey of India.1
- Senex, John, -17401
- Seutter, Matthaeus, 1678-17561
- Smith, H. M. (Surveyor)1
- Somer, Jan1
- Tallis, John, 1815 or 1816-18761
- Tandy, Brigadier E.A1
- Tanner, Henry Schenck, 1786-18581
- Thacker, Spink & Co.1
- Thomas, Cowperthwait & Co.1
- Thornton, S. (Samuel), -17151
- Tirion, Isaak, -17691