X0101 EFFECT 33 LIVE 2020-01-22 0001193125-19-302470 485APOS 0000916620 NORTHERN FUNDS 033-73404 S000001263 NORTHERN MONEY MARKET FUND C000003409 NORTHERN MONEY MARKET FUND S000001264 NORTHERN MUNICIPAL MONEY MARKET FUND C000003410 NORTHERN MUNICIPAL MONEY MARKET FUND S000001266 NORTHERN U.S. GOVERNMENT MONEY MARKET FUND C000003412 NORTHERN U.S. GOVERNMENT MONEY MARKET FUND S000001267 NORTHERN U.S. GOVERNMENT SELECT MONEY MARKET FUND C000003413 NORTHERN U.S. GOVERNMENT SELECT MONEY MARKET FUND