<ARTICLE>             5
<LEGEND>
 THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
 CONSOLIDATED FINANCIAL STATEMENTS FOR THE THREE MONTHS ENDED MARCH 31,
 1999 OF WAUSAU-MOSINEE PAPER CORPORATION AND IS QUALIFIED IN ITS
 ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
                                    
 <PERIOD-TYPE>                               3-MOS
 <FISCAL-YEAR-END>                     DEC-31-1999
 <PERIOD-END>                          MAR-31-1999
 <CASH>                                      3,787
 <SECURITIES>                                    0
 <RECEIVABLES>                              89,999
 <ALLOWANCES>                                8,889
 <INVENTORY>                               148,920
 <CURRENT-ASSETS>                          253,382
 <PP&E>                                  1,068,864
 <DEPRECIATION>                            439,748
 <TOTAL-ASSETS>                            916,692
 <CURRENT-LIABILITIES>                     179,590
 <BONDS>                                   127,432
 <COMMON>                                  170,686
 <PREFERRED-MANDATORY>                           0
 <PREFERRED>                                     0
 <OTHER-SE>                                220,957
 <TOTAL-LIABILITY-AND-EQUITY>              916,692
 <SALES>                                   226,441
 <TOTAL-REVENUES>                          226,441
 <CGS>                                     187,778
 <TOTAL-COSTS>                             201,310
 <OTHER-EXPENSES>                                9
 <LOSS-PROVISION>                                0
 <INTEREST-EXPENSE>                          2,518
 <INCOME-PRETAX>                            22,604
 <INCOME-TAX>                                8,500
 <INCOME-CONTINUING>                        14,104
 <DISCONTINUED>                                  0
 <EXTRAORDINARY>                                 0
 <CHANGES>                                       0
 <NET-INCOME>                               14,104
 <EPS-PRIMARY>                                0.27
 <EPS-DILUTED>                                0.26