Garrett, Paul  
   University of Minnesota. Automorphic forms, representations, L-functions. Notes and papers.
   http://www.math.umn.edu/~garrett/

Girard, Martine  
   University of Sydney. Arithmetic of elliptic curves. Code to compute the heights of points on elliptic curves over number fields or function fields.
   http://www.institut.math.jussieu.fr/~girard/anglais.html

Glass, Darren  
   Columbia University. Arithmetic geometry.
   http://www.math.columbia.edu/~glass/

Ghitza, Alexandru  
   CICMA and McGill University. Arithmetic geometry: the relation between modular forms and Galois representations. Thesis, preprints, talks.
   http://www.math.mcgill.ca/~ghitza/

Galbraith, Steven  
   Royal Holloway University of London. Number theory, elliptic curves. Publications, thesis, resources.
   http://www.isg.rhul.ac.uk/~sdg/

Ghate, Eknath  
   Tata Institute of Fundamental Research. Automorphic forms, Galois representations, and special values of L-functions. Publications, thesis, lecture notes.
   http://www.math.tifr.res.in/~eghate/

Gerth, Frank E, III  
   University of Texas. Algebraic number theory, including class numbers, class groups, discriminants, class field theory, density theorems, Iwasawa theory. Contact information.
   http://www.ma.utexas.edu/text/webpages/gerth.html

Gee, Toby  
   Imperial College, London. Arithmetic of modular forms. Preprints.
   http://www.ma.ic.ac.uk/~tsg/

Gaál István  
   University of Debrecen. Constructive methods for the complete resolution of Diophantine equations: Thue, norm form discriminant form, index form; Power integral bases in algebraic number fields. Publications, results, algorithms and tables of numerica
   http://www.math.klte.hu/~igaal/

Gonek, Steve  
   University of Rochester. Analytic number theory, especially multiplicative number theory and the theory of the Riemann zeta-function. Publications.
   http://www.math.rochester.edu/people/faculty/gonek/

Green, Ben J.  
   University of Bristol. Arithmetic combinatorics. Papers, preprints.
   http://www.maths.bris.ac.uk/~mabjg/

Goss, David  
   Ohio State University. Zeta-functions, gamma functions, motives, Drinfeld modules, modular forms, Galois representations, special-values, non-archimedean analysis, K-theory. Publications, books.
   http://www.math.ohio-state.edu/~goss/