A review is presented on abundance determinations in stars of the Galactic bulge, both in the field and in globular clusters. Previous low-resolution spectroscopy results are revised. Recent high resolution and high S/N spectroscopy results based on Keck-Hires, Gemini-Phoenix and VLT-UVES data are presented. Finally, recent analyses of FLAMES data are discussed. The discussion on abundances will focus on metallicities, α- and r-process elements, as probes of the nucleosynthesis history in the bulge, and timescale of bulge formation.