<p><strong>Background</strong><strong>:</strong> In the present work, a newly isolated marine bacterium, <em>Micrococcus</em> sp. MP76, from coastal area of Persian Gulf around Bushehr province, Iran, was identified with the ability to produce bioactive compounds.</p> <p><strong>Methods:</strong> The pigment production was optimized by changing carbon and nitrogen sources in bacterial growth media at 28<em>&deg;</em><em>C</em> and 220 <em>rpm</em> for 5 days. Partial purification of the pigment was carried out using suitable solvents.</p> <p><strong>Results:</strong> Maximum pigment extract was achieved (1.4 <em>g/l</em>) when cultured in the medi<em>um</em> containing 0.5% (v/v) molasses, 0.5% (w/v) peptone, 1% (w/v) sea salt, 0.01% (w/v) potassium phosphate, and 0.05% (w/v) yeast extract, pH=7.0. Antibacterial effect assessment of the extract against pathogenic bacteria revealed the MIC values in the range of 4.2-7.5 <em>mg/ml</em> depending on different pathogens. The pigment extracted from medium supplemented by molasses and ammonium sulfate had 81% radical scavenging activity, and its IC₅₀ value was 0.28 <em>mg/ml</em>.</p> <p><strong>Conclusion:</strong> The newly isolated strain of <em>Micrococcus</em> genus from the Persian Gulf revealed a valuable source to access worth medicinal ingredients when cultured under optimized conditions.</p>