How to Testify in Criminal Court: DOs and DON’Ts
By Hans ‘John’ Kalina · Originally published October 1, 2025 · Consolidated October 6, 2026
Good preparation helps you give clear, accurate evidence. It does not mean rehearsing a version of events, memorizing answers or guessing what a lawyer wants to hear. This guide brings together our practical testimony advice and the former “Preparing to Testify in Court” answer.
Before you testify
Discuss the process and your concerns with your lawyer. Preparation should help you understand the proceedings without coaching or changing your evidence.
Dress neatly and conservatively, as you would for an interview. When called, sit upright and speak clearly.
Review your own recollection and tell counsel about earlier statements, notes or recordings. Distinguish what you personally remember from what someone else has told you.
Listen, pause and answer the question
Listen to the entire question before answering. If you did not hear or understand it, ask for it to be repeated or clarified.
Take time to think. Answer the question asked, then stop; do not volunteer unrelated information.
Speak naturally, loudly enough to be heard and at a measured pace. Do not look to a lawyer or the judge for an answer.
If a legal objection or a direction from the judge arises, pause and follow the court’s instructions.
Accuracy matters more than certainty
Tell the truth. Do not exaggerate, guess, fill gaps or memorize a script.
If you do not know or cannot remember, say so. Do not present second-hand information as your own observation.
Correct a mistake as soon as you notice it. Tell counsel promptly if you discover an error after leaving the witness stand.
Remain courteous and composed, including during cross-examination. Avoid arguing with counsel or the judge.
Explore the Testifying series
The six articles below address separate issues and remain available individually:
Related reading
Speak with counsel
For advice about your case, contact the Law Office of Kalina & Tejpal or call 416-900-6999.
This article provides general information only and is not legal advice. Whether to testify and how to prepare depend on your individual circumstances.