UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    Form 6-K

                        REPORT OF FOREIGN PRIVATE ISSUER

                        PURSUANT TO RULE 13a-16 OR 15d-16
                     OF THE SECURITIES EXCHANGE ACT OF 1934

For the month of April 2004

Commission File Number:  0-30628


                                  ALVARION LTD.
 ------------------------------------------------------------------------------
                 (Translation of registrant's name into English)

                   21A Habarzel Street, Tel Aviv 69710, Israel
 ------------------------------------------------------------------------------
                     (Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports
under cover of Form 20-F or Form 40-F.
Form 20-F |X|   Form 40-F |_|

Indicate by check mark if the registrant is submitting the Form 6-K in paper
as permitted by Regulation S-T Rule 101(b)(1): ____

Indicate by check mark if the registrant is submitting the Form 6-K in paper
as permitted by Regulation S-T Rule 101(b)(7): ____


Indicate by check mark whether by furnishing the information contained in this
Form, the registrant is also thereby furnishing the information to the
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.
Yes |_| No |X|

If "Yes" is marked, indicate below the file number assigned to the registrant
in connection with Rule 12g3-2(b): 82-___________




The following are included in this report on Form 6-K:

                                                         Sequential
      Exhibit              Description                   Page Number
      -------              -----------                   -----------

       1.         Press release, dated April 21, 2004            3




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                                                                       EXHIBIT 1

Contacts
Dafna Gruber, CFO             Carmen Deville
+972 3 645 6252               +760-517-3188
+760-517-3187
dafna.gruber@alvarion.com     carmen.deville@alvarion.com
-------------------------     ---------------------------


                                                           FOR IMMEDIATE RELEASE




      ALVARION TO SUPPLY WIRELESS VOICE AND DATA SOLUTION TO BOLIVIAN PHONE
                 COOPERATIVE UNDER A $7 MILLION FRAME AGREEMENT



         Alvarion's eMGW(TM) solution to enhance COTAS' service offering


Tel-Aviv, Israel, April 21, 2004 - Alvarion Ltd. (NASDAQ: ALVR), the leading
provider of wireless broadband solutions worldwide, today announced that
Cooperativa de Telecommunicaciones Santa Cruz Ltda. (COTAS), the second largest
phone cooperative in Bolivia, has signed a $7 million frame agreement to deploy
Alvarion's eMGW broadband wireless access solution.

As a replacement for its current outdated WLL system, Alvarion's 3.8 GHz product
will allow COTAS to provide enhanced voice and Internet access to its customers
in the greater Santa Cruz area beginning in the third quarter. The Santa Cruz
deployment, for which Alvarion has already received a $3.6 million purchase
order, represents the first phase of COTAS deploying broadband wireless to
service customers throughout its service territory.

Hans Lohner Paz, CEO of COTAS, said, "By choosing Alvarion and its eMGW product
for our wireless network solution, we will now be able to reach many new
customers in suburban and rural Santa Cruz with not only traditional
toll-quality voice services, but also with Internet and data as well. This
demonstrates COTAS' commitment to offer the latest in technology to improve
service to our customers."

Alvarion's eMGW solution was selected after an extensive review of suppliers
from all over the world. The eMGW provides fast Internet access, corporate
access and carrier-class telephony in a single system and its modular and
scalable configuration enables incremental growth based on customer demand and a
fast return on investment.



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Operating in a wide range of frequencies (800MHz - 5.7GHz), the MGW/eMGW family
of solutions have been successfully installed in mass markets in over 60
countries.

Zvi Slonimsky, chief executive officer of Alvarion, added, "COTAS is a
progressive operator that is committed to improving its services. Alvarion was
chosen from 18 competing companies to be COTAS' preferred wireless vendor.
COTAS' deployment is yet another example of the important role that BWA plays in
improving the telecommunications infrastructure by enabling high-speed data as
well as voice."

About Cotas:
COTAS Ltda. (Cooperativa de Telecomunicaciones Santa Cruz Ltda.) is the second
largest local phone cooperative in Bolivia. COTAS leads all other cooperatives
in call volume and in revenues. It offers a wide range of telecommunications
services such as Internet, ADSL, data transmission, pager services, long
distance calls, public phones, cable TV and of course local calls. In Santa
Cruz, COTAS is the leader in every service it provides. COTAS was founded in
1960 with 2400 lines. At this moment COTAS has 178,000 digital landlines.

About Alvarion
Alvarion is dedicated to delivering seamless wireless broadband networking
infrastructure to carriers, ISPs and private network operators, in order to
leverage their broadband opportunities into sustainable profits. Alvarion offers
premier wireless broadband solutions for access in the last mile, backhauling
connection to the backbone and private network connectivity. Featuring the
industry's most extensive range of products and international support, Alvarion
is a pioneering leader of the converged wireless broadband network. With over
1.5 million units deployed in 120 countries worldwide, Alvarion provides secure
rich-media networks for business or residential Internet access, corporate VPNs,
cellular base station feeding, community interconnection, public safety
connectivity and extended Hotspots.

Having recently acquired InnoWave's wideband access portfolio and expertise,
Alvarion provides a complete wireless solution that supports a wide range of
frequency bands, customer profiles and service types.

This press release contains forward -looking statements within the meaning of
the "safe harbor" provisions of the Private Securities Litigation Reform Act of
1995. These statements are based on the current expectations or beliefs of
Alvarion's management and are subject to a number of factors and uncertainties
that could cause actual results to differ materially from those described in the
forward -looking statements. The following factors, among others, could cause
actual results to differ materially from those described in the forward-looking
statements: inability to further identify, develop and achieve success for new
products, services and technologies; increased competition and its effect on
pricing, spending, third-party relationships and revenues; as well as the
inability to establish and maintain relationships with commerce, advertising,
marketing, and technology providers and other risks detailed from time to time
in filings with the Securities and Exchange Commission.
Information set forth in this press release pertaining to third parties has not
been independently verified by Alvarion and is based solely on publicly
available information or on information provided to Alvarion by such third
parties for inclusion in this press release. The web-sites appearing in this
press release are not and will not be included or incorporated by reference in
any filing made by Alvarion with the Securities and Exchange Commission which
this press release will be a part of.

You may request Alvarion's future press releases or a complete Investor Kit by
contacting Carmen Deville, Investor Relations: carmen.deville@alvarion.com or
760-517-3188


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                                   SIGNATURES

            Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.


                                    ALVARION LTD.



Date: April 21, 2004                By: /s/  Dafna Gruber
                                       -------------------------------
                                    Name:  Dafna Gruber
                                    Title: Chief Financial Officer



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