**EXHIBIT
        31.1**
  
 **Rule
        13(a) - 14(a) / 15(d) -14(a) Certification**
  I,
        Owen
        J. Onsum, certify that:
  1. 
         I have reviewed this annual report on Form 10-K of First Northern
        Community Bancorp;
  2. 
         Based on my knowledge, this annual 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 annual
        report;
  3.  Based
        on
        my knowledge, the financial statements, and other financial information included
        in this annual report, fairly present in all material respects the financial
        condition, results of operations and cash flows of the registrant as of,
        and
        for, the periods presented in this annual report;
 4.  
        The registrant's other certifying officer and I are responsible for establishing
        and maintaining disclosure controls and procedures (as defined in Exchange
        Act
        Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting
        (as
        defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) 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 annual 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 annual report our conclusions about the
        effectiveness of the disclosure controls and procedures, as of the end of
        the
        period covered by this annual report based on such evaluation; and
  d)  
        disclosed in this annual report any change in the registrant’s internal control
        over financial reporting that occurred during the registrant’s fourth 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 and I have disclosed, based on
        our most recent evaluation of internal control over financial reporting,
        to the
        registrant's auditors and the audit committee of 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:
        March 16, 2006
 /s/
                  Owen J. OnsumOwen
                  J. OnsumPresident
                  and Chief Executive Officer