Arun Kumar & Co. LLP is a law firm in Chennai. It was started in 2017 and is now a Limited Liability Partnership (LLPIN ACQ-4226), with its office at Porur, Chennai. The firm advises on corporate, criminal, tax, and regulatory matters, and also handles court and tribunal cases.

The firm works with companies, LLPs, startups, financial institutions, NGOs, business owners, and individuals, both in India and abroad. It helps businesses at every stage, from setting up a company to handling everyday legal needs and resolving disputes. Clients deal with one point of contact through the whole matter. The firm gives commercial advice with a clear view of how a deal or position would hold up if it later reaches a court, and it handles disputes with a proper understanding of the business and rules behind them.

The firm's areas of work include corporate and commercial law, such as company formation, shareholder and partnership agreements, contracts, and general corporate advice; mergers and acquisitions; taxation, covering GST and income tax, including assessments, appeals, and writ matters; intellectual property rights; international trade and foreign investment; real estate, including title checks and property documents; and dispute resolution through civil, commercial, criminal, and tax cases, along with arbitration.

The firm appears before the Supreme Court of India, the Madras High Court, and Civil Court and subordinate courts, and before the tribunals at Chennai, including the Income Tax Appellate Tribunal, the GST appellate authorities, the National Company Law Tribunal (NCLT), the National Company Law Appellate Tribunal (NCLAT), and the Debts Recovery Tribunal (DRT).