TB or tb can stand for: Science and medicine · Tuberculosis, a chronic infectious disease · Terbium (chemical symbol Tb), a chemical element Technology · Terabit (Tb), a unit of information used, for example, to quantify computer memory or storage capacity · Terabyte (TB), a unit of information used, for example, to quantify computer memory or storage capacity Other · Total bases (TB), a baseball statistic. · Tampa Bay (TB), a region in Florida. · Tailback (TB), a position in American football. · Teen Baby (TB), a teen that wishes to be a baby; also infantalism · Taco Bell (TB), a Mexican-style quick service restaurant cha