In a process for producing tricyclo[5.2.1.02,6]decane-2-carboxylic acid ester by reacting tricyclo[5.2.1.02,6]deca-3-ene with carbon monoxide and alcohol in the presence of HF, carried out separately are (a) a step in which tricyclo[5.2.1.02,6]deca-3-ene is reacted with carbon monoxide to produce acyl fluoride and (b) a step in which acyl fluoride obtained in the step described above is reacted with alcohol to produce an ester. Also, the reaction conditions at the step (a) described above are selected or a step for carrying out isomerization reaction of tricyclo[5.2.1.02,6]decane-2-carboxylic fluoride obtained at the step (a) is interposed between the step (a) and the step (b). Further, the crude product of tricyclo[5.2.1.02,6]decane-2-carboxylic acid ester thus obtained is subjected to contact treatment with specific glycol in the presence of an acid catalyst and then distilled.