Exhibit 14.1  Cymer, Inc.
Code of Ethics for Chief Executive, Chief Financial and Chief Accounting
Officers  The Cymer, Inc. Employee Handbook includes the Cymer Values, a
set of business values against which we measure all of our decisions and
behaviors. One of these values is that we hold all Cymer employees to the
highest standards of personal integrity: that we are honest and ethical in all
our business dealings; that we keep our promises and admit our mistakes. Such
personal conduct ensures that Cymers name is always worthy of trust.  The Employee Handbook applies to all employees of Cymer, including the
Chief Executive, Chief Financial and Chief Accounting Officers. These officers
given the special nature of the responsibilities entrusted to them are held to
additional standards of conduct. In addition to the Handbook provisions of
ethical conduct, conflicts of interest and compliance with law, Cymers Board
of Directors has adopted the following Code of Ethics specifically for our
Chief Executive, Chief Financial, and Chief Accounting Officers:  ·You are responsible for
full, fair, accurate, timely and understandable financial disclosure in reports
and documents filed with or furnished to the Securities and Exchange Commission
by Cymer and in other public communications made by Cymer. You must ensure that
Cymers accounting records are maintained in accordance with all applicable
laws, properly supported and classified, and you must not knowingly include any
false or misleading entries.  ·You are responsible for
Cymers internal control over financial reporting.  You shall promptly bring to the attention of Cymers
auditors and the Audit Committee any information you may have concerning  ·Significant
deficiencies and material weaknesses in the design or operation of internal
control over financial reporting that are reasonably likely to adversely affect
Cymers ability to record, process, summarize and report financial data, or  ·Any fraud,
whether or not material, that involves management or other employees who have a
significant role in Cymers internal control over financial reporting.  ·Your conduct cannot be such
that it would interfere with Cymers business interest and you may never let
business dealings on behalf of Cymer be influenced - or even appear to be
influenced - by personal interests. You shall promptly bring to the attention
of the Audit Committee any information you may have concerning any actual or
apparent conflict of interest between personal and professional relationships,
involving any management or other employee who has a significant role in Cymers
financial reporting, disclosures or internal controls.  ·Cymer is committed to
complying with both the letter and the spirit of all applicable laws, rules and
regulations. You shall promptly bring to the attention of the Audit Committee
any information you may have concerning evidence of a material violation of the
securities exchange or other laws, rules or regulations applicable to
Cymer or its employees or agents. You shall promptly bring to the attention of
the Audit Committee any information you may have concerning any violation of
this Code of Ethics. The Board of Directors shall be responsible for
determining disciplinary action to be taken by Cymer in the event of a violation
of this Code of Ethics.