Nathan Sinrod, 75, a Washington certified public accountant for the last 44 years, died Wednesday at Sibley Memorial Hospital following a stroke.

He cofounded the accounting firm of Sinrod & Tash in 1935.

Mr. Sinrod was born in Minsk, Russia, and came to Washington at an early age. He was a graduate of the old Business High School and a 1933 graduate of Ben Franklin University. He earned a law degree at Southeastern University in 1942.

Before cofounding Sinrod & Tash, Mr. Sinrod worked for seven years as manager of the Hay-Adams Hotel.

He was a Mason and belonged to the Woodmont Country and Amity clubs.

His professional memberships included the American Institute and D.C. Society of CPAs and the American and D.C. bar associations. He also belonged to the American Association of Attorney/CPAs.

Mr. Sinrod was a member of the Washington Hebrew Congregation.

His first wife, the former Lillian Laskin, died in 1963.

He is survived by his wife, the former Thelma Towbes, of the home in Washington; two sons, Dr. Harold S., of Potomac, and Donald E., of Bethesda; a stepson, Michael Towbes, and a stepdaughter, Carol Skinner, both of California; a sister, Sylvia Levy, of Chevy Chase, and nine grandchildren. CAPTION: Picture, NATHAN SINROD