Exhibit 24


                               POWER OF ATTORNEY


     KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Directors of Alcoa
Inc. (the "Company") hereby constitute and appoint RICHARD B. KELSON, ROBERT G.
WENNEMER, TIMOTHY S. MOCK and DENIS A DEMBLOWSKI, or any of them, their true and
lawful attorneys and agents to do any and all acts and things and execute any
and all instruments which said attorneys and agents, or any of them, may deem
necessary or advisable or may be required to enable the Company to comply with
the Securities Act of 1933, as amended, and any rules, regulations or
requirements of the Securities and Exchange Commission in respect thereof, in
connection with the registration under said Act of shares of common stock of the
Company to be issued and distributed pursuant to the Reynolds Metals Company
Savings and Investment Plan for Salaried Employees, Reynolds Metals Company
Savings Plan for Hourly Employees and Reynolds Metals Company Employees Savings
Plan or any successor plans (the "Plans"), and interests of participation in
such Plans, including specifically, but without limiting the generality of the
foregoing, power and authority to sign the name of the undersigned Directors to
any registration statements to be filed with the Securities and Exchange
Commission in respect of said Plans or successor plans and shares of common
stock, and interests of participation in such Plans, or any of them, to any and
all pre-effective amendments, post-effective amendments and supplements to any
such registration statements, and to any instruments or documents filed as part
of or in connection with any such registration statements or pre-effective
amendments or post-effective amendments or supplements thereto; and the
undersigned hereby ratify and confirm all that said attorneys and agents, or any
of them, shall do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned have subscribed these presents on the
date set opposite their names below.


    April 28, 2000                  /s/ Kenneth W. Dam
                                    _____________________________________
                                    Kenneth W. Dam

    April 27, 2000                  /s/ Joseph T. Gorman
                                    _____________________________________
                                    Joseph T. Gorman

    April 28, 2000                  /s/ Judith M. Gueron
                                    _____________________________________
                                    Judith M. Gueron

    April 27, 2000                  /s/ Sir Ronald Hampel
                                    _____________________________________
                                    Sir Ronald Hampel
            , 2000
                                    _____________________________________
                                    Hugh M. Morgan

    April 27, 2000                  /s/ John P. Mulroney
                                    _____________________________________
                                    John P. Mulroney


    April 27, 2000                  /s/ Paul H. O'Neill
                                    _____________________________________
                                    Paul H. O'Neill

    April 28, 2000                  /s/ Henry B. Schacht
                                    _____________________________________
                                    Henry B. Schacht

    April 28, 2000                  /s/ Franklin A. Thomas
                                    _____________________________________
                                    Franklin A. Thomas

      May  1, 2000                  /s/ Marina v.N. Whitman
                                    _____________________________________
                                    Marina v.N. Whitman


                               POWER OF ATTORNEY


     KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director,
President and Chief Executive Officer of Alcoa Inc. (the "Company") hereby
constitutes and appoints RICHARD B. KELSON, ROBERT G. WENNEMER, TIMOTHY S. MOCK
and DENIS A DEMBLOWSKI, or any of them, his true and lawful attorneys and agents
to do any and all acts and things and execute any and all instruments which said
attorneys and agents, or any of them, may deem necessary or advisable or may be
required to enable the Company to comply with the Securities Act of 1933, as
amended, and any rules, regulations or requirements of the Securities and
Exchange Commission in respect thereof, in connection with the registration
under said Act of shares of common stock of the Company to be issued and
distributed pursuant to the Reynolds Metals Company Savings and Investment Plan
for Salaried Employees, Reynolds Metals Company Savings Plan for Hourly
Employees and Reynolds Metals Company Employees Savings Plan or any successor
plans (the "Plans"), and interests of participation in such Plans, including
specifically, but without limiting the generality of the foregoing, power and
authority to sign the name of the undersigned Director, President and Chief
Executive Officer to any registration statements to be filed with the Securities
and Exchange Commission in respect of said Plans or successor plans and shares
of common stock, and interests of participation in such Plans, or any of them,
to any and all pre-effective amendments, post-effective amendments and
supplements to any such registration statements, and to any instruments or
documents filed as part of or in connection with any such registration
statements or pre-effective amendments or post-effective amendments or
supplements thereto; and the undersigned hereby ratifies and confirms all that
said attorneys and agents, or any of them, shall do or cause to be done by
virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents on the
date set opposite his name below.




      May 3, 2000                    /s/ Alain J. P. Belda
                                     __________________________________
                                     Alain J. P. Belda
                                     President, Chief Executive Officer
                                     And Director


                               POWER OF ATTORNEY


     KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Executive Vice
President and Chief Financial Officer of Alcoa Inc. (the "Company") hereby
constitutes and appoints ROBERT G. WENNEMER, TIMOTHY S. MOCK and DENIS A
DEMBLOWSKI, or any of them, his true and lawful attorneys and agents to do any
and all acts and things and execute any and all instruments which said attorneys
and agents, or any of them, may deem necessary or advisable or may be required
to enable the Company to comply with the Securities Act of 1933, as amended, and
any rules, regulations or requirements of the Securities and Exchange Commission
in respect thereof, in connection with the registration under said Act of shares
of common stock of the Company to be issued and distributed pursuant to the
Reynolds Metals Company Savings and Investment Plan for Salaried Employees,
Reynolds Metals Company Savings Plan for Hourly Employees and Reynolds Metals
Company Employees Savings Plan or any successor plans (the "Plans"), and
interests of participation in such Plans, including specifically, but without
limiting the generality of the foregoing, power and authority to sign the name
of the undersigned Executive Vice President and Chief Financial Officer to any
registration statements to be filed with the Securities and Exchange Commission
in respect of said Plans or successor plans and shares of common stock, and
interests of participation in such Plans, or any of them, to any and all pre-
effective amendments, post-effective amendments and supplements to any such
registration statements, and to any instruments or documents filed as part of or
in connection with any such registration statements or pre-effective amendments
or post-effective amendments or supplements thereto; and the undersigned hereby
ratifies and confirms all that said attorneys and agents, or any of them, shall
do or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents on the
date set opposite his name below.



April 27, 2000                            /s/ Richard B. Kelson
                                          _____________________________________
                                          Richard B. Kelson
                                          Executive Vice President and
                                          Chief Financial Officer


                               POWER OF ATTORNEY


     KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Vice President and
Controller of Alcoa Inc. (the "Company") hereby constitutes and appoints RICHARD
B. KELSON, ROBERT G. WENNEMER and DENIS A DEMBLOWSKI, or any of them, his true
and lawful attorneys and agents to do any and all acts and things and execute
any and all instruments which said attorneys and agents, or any of them, may
deem necessary or advisable or may be required to enable the Company to comply
with the Securities Act of 1933, as amended, and any rules, regulations or
requirements of the Securities and Exchange Commission in respect thereof, in
connection with the registration under said Act of shares of common stock of the
Company to be issued and distributed pursuant to the Reynolds Metals Company
Savings and Investment Plan for Salaried Employees, Reynolds Metals Company
Savings Plan for Hourly Employees and Reynolds Metals Company Employees Savings
Plan or any successor plans (the "Plans"), and interests of participation in
such Plans, including specifically, but without limiting the generality of the
foregoing, power and authority to sign the name of the undersigned Vice
President and Controller to any registration statements to be filed with the
Securities and Exchange Commission in respect of said Plans or successor plans
and shares of common stock, and interests of participation in such Plans, or any
of them, to any and all pre-effective amendments, post-effective amendments and
supplements to any such registration statements, and to any instruments or
documents filed as part of or in connection with any such registration
statements or pre-effective amendments or post-effective amendments or
supplements thereto; and the undersigned hereby ratifies and confirms all that
said attorneys and agents, or any of them, shall do or cause to be done by
virtue hereof.

     IN WITNESS WHEREOF, the undersigned has subscribed these presents on the
date set opposite his name below.



     April 27, 2000                       /s/ Timothy S. Mock
                                          ___________________________________
                                          Timothy S. Mock
                                          Vice President and Controller


                               POWER OF ATTORNEY


     KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned members of the
Benefits Management Committee of Alcoa Inc. (the "Company") hereby constitute
and appoint ROBERT G. WENNEMER, TIMOTHY S. MOCK and DENIS A DEMBLOWSKI, or any
of them, their true and lawful attorneys and agents to do any and all acts and
things and execute any and all instruments which said attorneys and agents, or
any of them, may deem necessary or advisable or may be required to enable the
Company to comply with the Securities Act of 1933, as amended, and any rules,
regulations or requirements of the Securities and Exchange Commission in respect
thereof, in connection with the registration under said Act of shares of common
stock of the Company to be issued and distributed pursuant to the Reynolds
Metals Company Savings and Investment Plan for Salaried Employees, Reynolds
Metals Company Savings Plan for Hourly Employees and Reynolds Metals Company
Employees Savings Plan or any successor plans (the "Plans"), and interests of
participation in such Plans, including specifically, but without limiting the
generality of the foregoing, power and authority to sign the name of the
undersigned members of the Benefits Management Committee to any registration
statements to be filed with the Securities and Exchange Commission in respect of
said Plans or successor plans and shares of common stock, and interests of
participation in such Plans, or any of them, to any and all pre-effective
amendments, post-effective amendments and supplements to any such registration
statements, and to any instruments or documents filed as part of or in
connection with any such registration statements or pre-effective amendments or
post-effective amendments or supplements thereto; and the undersigned hereby
ratify and confirm all that said attorneys and agents, or any of them, shall do
or cause to be done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned have subscribed these presents on the
date set opposite their names below.


                              /s/ Richard B. Kelson
April 27, 2000                _____________________________________
                              Richard B. Kelson

                              /s/ Robert F. Slagle
April 27, 2000                _____________________________________
                              Robert F. Slagle

                              /s/ William J. O'Rourke, Jr.
April 27, 2000                _____________________________________
                              William J. O'Rourke, Jr.