सनदी लेखाकार या किसी निश्चित व्यवसायिक लेखाशास्त्र संस्था या संघ के सदस्यों द्वारा प्रयोग की जाने वाली उपाधि है। इन्हें अँग्रेजी़ में चार्टर्ड अकाउंटैंट कहा जाता है। सनदी लेखाकार सभी व्यवसायों/व्यापारों या वित्तीय क्षेत्रों में कार्यरत है। कुछ लोक अभ्यास में कार्यरत होते हैं, अन्य निजि क्षेत्र में व कई सरकाई संस्थाओं में होते हैं।

Chartered accountants were the first accountants to form a professional accounting body, initially established in Scotland in 1854. The Edinburgh Society of Accountants (1854), the Glasgow Institute of Accountants and Actuaries (1854) and the Aberdeen Society of Accountants (1867) were each granted a royal charter almost from their inception. The title is an internationally recognised professional designation; the certified public accountant designation is generally equivalent to it. Women were able to become chartered accountants only following the Sex Disqualification (Removal) Act 1919 after which, in 1920, Mary Harris Smith was recognised by the Institute of Chartered Accountants in England and Wales and became the first woman chartered accountant in the world.