Abstract: A marine knife block for mounting on boats and marine vessels. The block is formed from three or more uniform blanks of plastic resin with channels milled or molded lengthwise into two or more of those layers. The three layers are sandwiched together by a combination of stainless steel screws and glue to form a plurality of knife blade receptacles. The back of the block may be secured to a flat surface by screws, thereby preventing movement of the knives held within when the boat is in motion.