<p>Several measures were developed in the past decades to measure personality, focusing on the Big Five Factor Model (BFFM; <em>Openness</em>, <em>Conscientiousness</em>, <em>Extraversion</em>, <em>Agreeableness</em>, and <em>Neuroticism</em>). Despite the relevance of their findings in different countries, a shared limitation of such measures is their length, demanding time from researchers and participants, which might cause boredom or fatigue, biasing the final results. This research aimed to provide a shorter version for the 44-Item <em>Big Five Inventory (BFI)</em>, through two studies (N<sub>Total</sub> = 8,119). The structure was assessed using a range of techniques (e.g., PAF analysis, Procrustes rotation). The best 20 items (4 per factor) were chosen to compose the final version of the BFI-20, which presented suitable psychometric evidences across the samples. Thus, due the growing need for shorter measures without losing their psychometric quality, our findings indicate the adequacy of the 20-item <em>BFI</em> and its potential applicability in research context.</p>