EXHIBIT 99.CERT
CERTIFICATIONS

I, Jeffrey W. Priest, certify that:

1. I have reviewed this report on Form N-Q of General American Investors Company, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to
state a material fact necessary to make the statements made, in light of the circumstances under which
such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the schedules of investments included in this report fairly present in all material
respects the investments of the registrant as of the end of the fiscal quarter for which the report is filed;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining
disclosure controls and procedures (as defined in rule 30a-3(c) under the Investment Company Act of
1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment
Company Act of 1940) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and
procedures to be designed under our supervision, to ensure that material information relating to
the registrant, including its consolidated subsidiaries, is made known to us by others within those
entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over
financial reporting to be designed under our supervision, to provide reasonable assurance regarding
the reliability of financial reporting and the preparation of financial statements for external purposes
in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented
in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of
a date within 90 days prior to the filing date of this report, based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting
that occurred during the registrant's most recent fiscal quarter that has materially affected, or is
reasonably likely to materially affect, the registrant's internal control over financial reporting;
and

5. The registrant's other certifying officer(s) and I have disclosed to the registrant's auditors and the
audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control
over financial reporting which are reasonably likely to adversely affect the registrant's ability to
record, process, summarize, and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a
significant role in the registrant's internal control over financial reporting.

Date: October 27, 2017

By: /s/Jeffrey W. Priest
Jeffrey W. Priest
President and Chief Executive Officer
(Principal Executive Officer)

I, Eugene S. Stark, certify that:

1. I have reviewed this report on Form N-Q of General American Investors Company, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to
state a material fact necessary to make the statements made, in light of the circumstances under which
such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the schedules of investments included in this report fairly present in all material
respects the investments of the registrant as of the end of the fiscal quarter for which the report is filed;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining
disclosure controls and procedures (as defined in rule 30a-3(c) under the Investment Company Act of
1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment
Company Act of 1940) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and
procedures to be designed under our supervision, to ensure that material information relating to
the registrant, including its consolidated subsidiaries, is made known to us by others within those
entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over
financial reporting to be designed under our supervision, to provide reasonable assurance regarding
the reliability of financial reporting and the preparation of financial statements for external purposes
in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented
in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of
a date within 90 days prior to the filing date of this report, based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting
that occurred during the registrant's most recent fiscal quarter that has materially affected, or is
reasonably likely to materially affect, the registrant's internal control over financial reporting;
and

5. The registrant's other certifying officer(s) and I have disclosed to the registrant's auditors and the
audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control
over financial reporting which are reasonably likely to adversely affect the registrant's ability to
record, process, summarize, and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a
significant role in the registrant's internal control over financial reporting.

Date: October 27, 2017

By: /s/Eugene S. Stark
Eugene S. Stark
Vice-President, Administration
(Principal Financial Officer)