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EXHIBIT 31.1 

CERTIFICATIONS

I, J. Randall Martin, certify that; 

(1) 

I have reviewed this quarterlyreport on Form 10-Q of Colombia Goldfields Ltd.; 

(2) 

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

(3) 

Based on my knowledge, thefinancial statements, and other financial information included in this report,fairly present in all material respects the financial condition, results ofoperations and cash flows of the registrant as of, and for, the periodspresented in this report; 

(4) 

The registrant’sother certifying officer(s) and I are responsible for establishing andmaintaining disclosure controls and procedures (as defined in Exchange Act Rules13a-15(e) and 15d-15(e)) and internal control over financial reporting (asdefined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant andhave: 

a) 

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

b) 

Designed suchinternal control over financial reporting, or caused such internal control overfinancial reporting to be designed under our supervision, to provide reasonableassurance regarding the reliability of financial reporting and the preparationof financial statements for external purposes in accordance with generallyaccepted accounting principles; 
c) 

Evaluated theeffectiveness of the registrant’s disclosure controls and procedures andpresented in this report our conclusions about the effectiveness of thedisclosure controls and procedures, as of the end of the period covered by thisreport based on such evaluation; and 
d) 

Disclosed in thisreport any change in the registrant’s internal control over financial reportingthat occurred during the registrant's most recent fiscal quarter (theregistrant’s fourth fiscal quarter in the case of an annual report) that hasmaterially affected, or is reasonably likely to materially affect, theregistrant’s internal control over financial reporting; and 

(5) 

The registrant’s othercertifying officer(s) and I have disclosed, based on our most recent evaluationof the internal control over financial reporting, to the registrant’s auditorsand the audit committee of the registrant’s board of directors (or personsperforming the equivalent functions): 

a) 

All significantdeficiencies and material weaknesses in the design or operation of internalcontrol over financial reporting which are reasonably likely to adversely affectthe registrant’s ability to record, process, summarize and report financialinformation; and 
b) 

Any fraud,whether or not material, that involves management or other employees who have asignificant role in the registrant’s internal control over financial reporting.
Date: August 8, 2008 

/s/ J. Randall Martin                                           By: J. Randall Martin Title: Chief Executive Officer and Vice Chairman