Muñiz Olaya Melendez Castro Ono & Herrera Abogados

Rankings and analyzes


Muñiz, Olaya, Meléndez, Castro, Ono & Herrera, founded in 1981, has considerable professional experience and is the largest law office in Peru. Our firm, which has around 300 lawyers and 40 practice areas, tries to develop a solid commitment and a long-term relationship with its clients in order to become identified with their business objectives and offer the necessary professional support, coupled with experience, creativity and common sense.

Estudio Muñiz has a leading practice in M&A deals in Peru and the team, the largest in the Peruvian legal market, has built up an unparalleled amount of experience over the past years, leading the M&A ranking in Peru for five consecutive years (2016, 2017, 2018, 2019 and 2020) according to Transactional Track Record (TTR), a leading monitoring company of the most relevant M&A transactions carried out in Latin America. The firm has the highest number of clients of any firm in Peru and was recognized by Lacca in 2019 and 2020 (Latin America Corporate Counsel Association) as the firm that advises the greatest number of key international corporations in Peru.

Muñiz is a member of the Pacific Rim Advisory Council (PRAC), an organisation that groups together over 32 of the most important Pacific Rim law offices, and also joined Interact Law. We are actually the only Firm in Peru with nationwide coverage through a vast network of offices, which makes us offer high quality services in almost every city in Peru.

The firm was the first law fim in Peru in opening a dedicated accounting service to meet the needs of companies and in view of the new criteria of the income tax law regarding the transfer-pricing regime the firm also set up Muñiz Transfer Pricing. Furthermore, there is Semigra, a company that provides migration consultancy. Recently the firm set up an alliance with Intedya, a well-known Spanish company with presence in 16 countries which focuses on implementing compliance programs at several companies.

The firm was the first, and probably still the only one, with a quality control and customer services department. This department is in charge of staying in contact with clients to know how satisfied they were with the service they received.


  • Administrative
  • Agriculture, Forestry & Water Resources
  • Aviation
  • Bankruptcy and Restructuring Proceedings
  • Capital Markets and Bank Regulation
  • Clearing of Land Title and Access to Land
  • Communications and Privacy
  • Competition, Bureaucratic Barriers and Antidumping
  • Competitive bidding processes
  • Corporate Law
  • Criminal Law
  • Electricity
  • Environment
  • Fashion and Retail Law
  • Fisheries
  • Foreign Trade
  • Infrastructure, PPP and Works for Taxes
  • Insurance and Reinsurance
  • Intellectual Property
  • International Arbitration
  • Labor and Social Security Matters
  • Litigation and Dispute Resolution
  • Maritime and Port Law
  • Mergers and Acquisitions
  • Mining
  • Municipal Regulations and Authorizations
  • Oil and Gas
  • Project Finance and Syndication
  • Real Estate and Construction
  • Tax
  • Tourism and Hotel Management
  • Transportation


Jorge Muñiz Ziches
Mauricio Olaya Nohra

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