Digwyddiadau

• Ffilmau - The Deer Hunter
• Llyfrau - Englynion Arfon (T Arfon Williams)
• Cerdd - Hen Wlad Fy Nhadau gan Geraint Jarman; Just the Way You Are gan Billy Joel

Genedigaethau

• 11 Mehefin - Joshua Jackson
• 7 Medi - Devon Sawa
• 27 Hydref - Vanessa-Mae, fiolynydd

Marwolaethau

• 9 Ebrill - Syr Clough Williams-Ellis, pensaer
• 6 Awst - Pab Pawl VI
• 22 Awst - Jomo Kenyatta, gwleidydd
• 24 Awst - Louis Prima, cerddor jazz
• 28 Medi - Pab Ioan Pawl I
• Syr Morien Morgan
• David Williams, hanesydd

Gwobrau Nobel

• Ffiseg: - Pyotr Leonidovich Kapitsa, Arno Allan Penzias, Robert Woodrow Wilson
• Cemeg: - Peter D Mitchell
• Meddygaeth: - Werner Arber, Daniel Nathans, Hamilton O Smith
• Llenyddiaeth: - Isaac Bashevis Singer
• Economeg: - Herbert Simon
• Heddwch: - Mohamed Anwar Al-Sadat a Menachem Begin

Eisteddfod Genedlaethol (Caerdydd)

• Cadair - dim
• Coron - Sion Eirian

1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978年 | 1978 | ೧೯೭೮ | 1978년 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | พ.ศ. 2521 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978年