The Architects
of Justice
A distinguished South African law firm advising individuals, families, and enterprises with precision, discretion, and unwavering resolve — across every forum of the law.
25+
Years in Practice
700+
Matters Resolved
7
Disciplines of Law
Sandton · Johannesburg
A heritage of counsel, built to endure.
Founded in the heart of Sandton, M Jansen Law Firm was established on a single conviction: that exceptional legal counsel should be both formidable in the courtroom and deeply human in the chamber. For over two decades we have represented South Africans through their most consequential moments — marriages dissolved, liberty defended, enterprises protected, legacies secured.
We are not a volume practice. We take on a measured number of matters so that each client receives the full weight of our attention, judgement, and resolve.
Integrity Without Compromise
We hold ourselves to the highest ethical standard. Our counsel is candid, our advocacy is honourable, and our word is our bond.
Discretion by Default
Your matters are handled in strict confidence. We protect your reputation, your privacy, and your interests as if they were our own.
Mastery of the Craft
Decades of specialised experience across South African courts mean your matter is guided by counsel who know the terrain intimately.
Seven disciplines. One standard.
Each practice area is led by counsel who have spent a career within it — so your matter is never handled by a generalist learning on your time.
Family Law
Divorce, custody, maintenance, and antenuptial contracts — handled with compassion and decisive advocacy.
Criminal Defence
Bail applications, trials, and appeals. Vigorous protection of your rights, liberty, and reputation.
Commercial & Corporate Law
Company formation, contracts, mergers, and compliance — counsel that safeguards enterprise at every turn.
Conveyancing & Property Law
Property transfers, bonds, and sectional titles — seamless, secure transactions from offer to registration.
Litigation
High Court and magistrate's court disputes — formidable advocacy across every forum of the law.
Estates & Wills
Wills, trusts, and deceased estates — your legacy protected and administered with precision.
Labour Law
Dismissals, CCMA representation, and employment contracts — balanced counsel for employers and employees.
Not sure where you fit?
Speak with our intake counsel.
The people who will carry your matter.
Our attorneys are not merely qualified — they are devoted to the craft. You will know your counsel by name, and your matter by the attention it receives.
Founding Partner
M. Jansen
Litigation & Commercial Law
With more than twenty-five years before the High Court, M. Jansen founded the firm on a commitment to rigorous preparation and quiet resolve.
Senior Partner
Thandiwe Nkosi
Criminal Defence & Family Law
A formidable trial advocate, Thandiwe brings precision and humanity to the most sensitive of personal and criminal matters.
Director
Edward van der Merwe
Conveyancing & Property Law
Edward oversees the firm's property practice, guiding transfers and developments to registration with exacting care.
Associate
Priya Naidoo
Estates & Wills · Labour Law
Priya counsels clients on legacy planning and workplace matters, combining sharp analysis with a steady, reassuring hand.
Trust, earned in consequence.
"They guided me through the most difficult chapter of my life with a steadiness I did not know was possible. Every decision was explained, every fear met with calm competence."
R. M.
Family Law client, Johannesburg
"When my business faced a dispute that threatened everything we had built, M Jansen Law Firm did not flinch. They were meticulous, unrelenting, and ultimately victorious."
A. K.
Commercial litigation client, Sandton
"Discretion was everything to me. My matter was handled quietly, professionally, and with a level of judgement that earned my complete trust."
Client
Criminal defence matter
Request a consultation.
Begin with a single, confidential conversation. Tell us a little of your matter and our intake counsel will arrange your consultation.
What to expect
- 1A confidential review of your matter by an attorney in the relevant discipline.
- 2An honest assessment of your position, your options, and likely outcomes.
- 3A clear outline of fees and next steps — with no obligation to proceed.
- 4Absolute discretion from the first conversation forward.
A simpler message
Prefer not to book just yet? Send a brief enquiry and we will respond within one business day.