EXHIBIT 32.3

CERTIFICATION OF THE CHIEF ACCOUNTING OFFICER

PURSUANT TO 18. U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Report on Form 10-Q of MariaDB plc (the “Company”) for the period ended March 31, 2023 filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Will Sanchez, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 15, 2023

MariaDB plc
By:	/s/ Will Sanchez
	Will Sanchez
	Chief Accounting Officer