Exhibit 23.1

               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS


We consent to the incorporation by reference in the Registration Statement (Form
S-8 No.33-5111) pertaining to the 1984 Stock Option Plan, 1981 Incentive Stock
Option Plan and Nonqualified Stock Option Plan of Amgen Inc., in the
Registration Statement (Form S-8 No.33-24013) pertaining to the Amended and
Restated 1988 Stock Option Plan of Amgen Inc., in the Registration Statement
(Form S-8 No.33-39183) pertaining to the Amended and Restated Employee Stock
Purchase Plan, in the Registration Statement (Form S-8 No.33-39104) pertaining
to the Amended and Restated Amgen Retirement and Savings Plan, in the
Registration Statements (Form S-3/S-8 No.33-29791 and Form S-8 No.33-42501)
pertaining to the Amended and Restated 1987 Directors' Stock Option Plan, in the
Registration Statement (Form S-8 No.33-42072) pertaining to the Amgen Inc.
Amended and Restated 1991 Equity Incentive Plan, in the Registration Statement
(Form S-8 No.33-47605) pertaining to the Retirement and Savings Plan for Amgen
Puerto Rico, Inc., in the Registration Statement (Form S-8 No.333-44727)
pertaining to the Amgen Inc. 1997 Special Non-Officer Equity Incentive Plan, in
the Registration Statement (Form S-3 No.333-19931) of Amgen Inc., in the
Registration Statement (Form S-3 No.333-40405) of Amgen Inc., in the
Registration Statement (Form S-8 No.333-62735) pertaining to the Amgen Inc.
Amended and Restated 1997 Special Non-Officer Equity Incentive Plan, in the
Registration Statement (Form S-3 No.333-53929) pertaining to the Amgen Inc. 1997
Special Non-Officer Equity Incentive Plan, the Amgen Inc. Amended and Restated
1991 Equity Incentive Plan, the Amended and Restated 1988 Stock Option Plan of
Amgen Inc. and the Amended and Restated 1987 Directors' Stock Option Plan, in
the Registration Statement (Form S-8 No.333-74585) pertaining to the Amgen
Limited Share Save Plan, in the Registration Statement (Form S-8 No.333-81284)
pertaining to the Amgen Nonqualified Deferred Compensation Plan, in the
Registration Statement (Form S-8 No.333-56672) pertaining to the Amended and
Restated 1997 Special Non-Officer Equity Incentive Plan, in the Registration
Statement (Form S-3 No.333-56664 and Amendment No.1 thereto) pertaining to the
Amgen Inc. 1997 Special Non-Officer Equity Incentive Plan, the Amgen Inc.
Amended and Restated 1991 Equity Incentive Plan, the Amended and Restated 1988
Stock Option Plan of Amgen Inc. and the Amended and Restated 1987 Directors'
Stock Option Plan, and in the Registration Statement (Form S-8 No. 333-83824)
pertaining to the Amended and Restated 1997 Special Non-Officer Equity Incentive
Plan, and in the related Prospectuses of our report dated January 22, 2002
(except for Note 16 as to which the date is March 8, 2002), with respect to the
consolidated financial statements of Immunex Corporation included in this
Current Report (Form 8-K) of Amgen Inc. dated May 16, 2002.


                                                       /s/  ERNST & YOUNG LLP

Seattle, Washington
May 21, 2002