UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549

FORM 8-A

FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
PURSUANT TO SECTION 12(b) OR 12(g) OF
THE SECURITIES EXCHANGE ACT OF 1934

MSD ACQUISITION CORP.
(Exact Name Of Registrant As Specified In Its Charter) 

Cayman Islands	98-1583537
(State of incorporation or organization)	(I.R.S. Employer Identification No.)

645 Fifth Avenue, 21st Floor New York, New York	10022
(Address of principal executive offices)	(Zip Code)

Securities to be registered pursuant to Section 12(b) of the Act:

Title of each class to be so registered	Name of each exchange on which each class is to be registered
Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-fifth of one redeemable warrant	The Nasdaq Stock Market LLC
Class A ordinary shares included as part of the units	The Nasdaq Stock Market LLC
Warrants included as part of the units, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50	The Nasdaq Stock Market LLC

If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c), check the following box. ☒

If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d), check the following box. ☐

Securities Act registration statement file number to which this form relates: 333-253316

Securities to be registered pursuant to Section 12(g) of the Act: None

Item 1. Description of Registrant’s Securities to be Registered

The description of the units, each consisting of one Class A ordinary share, $0.0001 par value, and one-fifth of one redeemable warrant, the Class A ordinary shares and warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50, of MSD Acquisition Corp., a Cayman Islands exempted company, as set forth under the caption “Description of Securities” in the prospectus forming a part of the Registration Statement on Form S-1, as originally filed with the Securities and Exchange Commission (the “Commission”) on February 19, 2021 (Registration No. 333-253316 ), including exhibits, and as may be subsequently amended from time to time (the “Registration Statement”), is hereby incorporated by reference. In addition, all of the above-referenced descriptions included in any prospectus relating to the Registration Statement filed with the Commission pursuant to Rule 424(b) under the Securities Act of 1933, as amended, shall be deemed to be incorporated by reference herein.

Item 2. Exhibits

Pursuant to the Instructions as to Exhibits for Form 8-A, no exhibits are required to be filed, because no other securities of the Registrant are registered on The Nasdaq Stock Market LLC and the securities registered hereby are not being registered pursuant to Section 12(g) of the Securities Exchange Act of 1934, as amended.

SIGNATURES

Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereto duly authorized.

	MSD Acquisition Corp.
Date: March 24, 2021	By:	/s/ John Cardoso
	Name:	John Cardoso
	Title:	Chief Financial Officer