A Practice Note outlining common legal privileges a litigant or witness may assert to avoid providing certain kinds of information or testimony in a Pennsylvania civil case. This Note discusses Pennsylvania privilege law on disclosures by accountants, attorneys, clergy members, counseling professionals, interpreters, jointly represented clients, news reporters, non-testifying experts, physicians, psychiatrists, psychologists, spouses, and school personnel. This Note also addresses the privilege against self-incrimination, the privilege for mediation communications and documents, trade secrets protections, and information the common interest (or joint defense) and work product doctrines protect.