TTPA Trintech (MM)

Item 1. Security and Issuer

The class of equity securities to which this Schedule 13D relates are the ordinary shares, US$0.0027 par value, represented by American Depositary Shares, of Trintech Group PLC, an Irish public limited company, with its principal executive office at Block C, Central Park, Leopardstown, Dublin 18, Ireland.

Item 2. Identity And Background

This Schedule 13D is being filed on behalf of Cyril McGuire (the “Reporting Person”). The business address of the Reporting Person is located at Trintech Group PLC, Block C, Central Park, Leopardstown, Dublin 18, Ireland. The Reporting Person is the Chairman and Chief Executive Officer of Trintech Group PLC.

During the last five years, the Reporting Person has not been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).

During the last five years, the Reporting Person has not been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

The Reporting Person is a citizen of the Republic of Ireland.

Item 3. Source and Amount of Funds or Other Consideration

On 29 January, 2008, the Reporting Person used personal funds of US$338,800 to exercise and hold 140,000 American Depositary Shares on the Nasdaq Global Market at an average price of $2.36 per American Depositary Share, which gave rise to this Schedule 13D. The Reporting Person has previously filed statements on Schedule 13G but is now filing this Schedule 13D pursuant to Rule 13d-1(f) under the Securities Exchange Act of 1934, as amended, because his beneficial ownership of the equivalent American Depositary Shares outstanding of Trintech Group PLC exceeds 20% and he has acquired greater than 2% of such class in the preceding twelve months.

Item 4. Purpose of Transaction

The Reporting Person purchased the securities of Trintech Group PLC based on the Reporting Person’s belief that the securities, when purchased, represented an attractive investment opportunity. The Reporting Person may, from time to time, acquire additional securities of Trintech Group PLC or sell securities of Trintech Group PLC, subject to applicable limitations imposed on the transactions by U.S. securities laws and other applicable laws.

Item 5. Interest in Securities of the Issuer

As of the date hereof, the Reporting Person has beneficial ownership of 3,739,260 equivalent American Depositary Shares representing approximately 23.30% of the equivalent American Depositary Shares outstanding of Trintech Group PLC. The Reporting Person has sole voting and dispositive power over all such securities. As noted above, on January 29, 2008, the Reporting Person used personal funds US$338,800 to exercise and hold 140,000 American Depositary Shares on the Nasdaq Global Market at an average price of $2.36 per American Depositary Share.

Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer

None, other than option agreements that the Reporting Person has entered into with Trintech Group PLC relating to option grants made to the Reporting Person in the ordinary course of business in his capacity as an employee of Trintech Group PLC.

Item 7. Material to Be Filed as Exhibits

None.

Signature

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.