Your question touches the scientific consensus — I'll pull the latest evidence on human-driven climate change to answer it.
Yes — according to the overwhelming scientific evidence and consensus, humans are the primary cause of current climate change.
Scientific consensus
•There is scientific consensus that the Earth has been consistently warming since the start of the Industrial Revolution, that the rate of recent warming is largely unprecedented, and that this warming is mainly the result of a rapid increase in atmospheric carbon dioxide (CO2) caused by human activities.
•The scientific community has investigated the causes for decades and concluded it is "unequivocal that human influence has warmed the atmosphere, ocean and land since pre-industrial times." This consensus is supported by around 200 scientific organizations worldwide.
•Nearly all actively publishing climate scientists say humans are causing climate change. A 27-country study found agreement is now 97 percent to 99.9 percent.
•Observations throughout the world make it clear that climate change is occurring, and rigorous scientific research demonstrates that the greenhouse gases emitted by human activities are the primary driver.
What the major assessments say
•The Intergovernmental Panel on Climate Change (IPCC) - the UN body assessing climate science with hundreds of scientists from 90+ countries - concluded in its Sixth Assessment Report (AR6) that "It is unequivocal that human influence has warmed the atmosphere, ocean and land."
•The same report states: A.1 It is unequivocal that human influence has warmed the atmosphere, ocean and land. Widespread and rapid changes in the atmosphere, ocean, cryosphere and biosphere have occurred.
•AR6 also concludes it is unequivocal that the increase of CO2, methane, and nitrous oxide in the atmosphere over the industrial era is the result of human activities and that human influence is the principal driver of many changes observed across the atmosphere, ocean, cryosphere, and biosphere.
•NASA summarizes: Scientific evidence continues to show that human activities (primarily the human burning of fossil fuels) have warmed Earth's surface and its ocean basins.
•NASA also states: There is unequivocal evidence that Earth is warming at an unprecedented rate. Human activity is the principal cause.
How humans are causing it
•Scientists attribute the global warming trend observed since the mid-20th century to the human expansion of the "greenhouse effect" — warming that results when the atmosphere traps heat radiating from Earth toward space.
•The mechanism: Five key greenhouse gases are carbon dioxide, nitrous oxide, methane, chlorofluorocarbons, and water vapor. Humans increase their concentration, especially CO2.
•Over the last century, burning fossil fuels like coal and oil has increased atmospheric CO2. The industrial activities that our modern civilization depends upon have raised atmospheric carbon dioxide levels by nearly 50% since 1750.
•The American Geophysical Union concluded: Based on extensive scientific evidence, it is extremely likely that human activities, especially emissions of greenhouse gases, are the dominant cause of the observed warming since the mid-20th century.
•The primary driver for increased global temperatures in the industrial era is human activity, with natural forces adding variability.
Why natural causes alone don't explain current warming
•While the Sun has played a role in past climate changes, the evidence shows the current warming cannot be explained by the Sun.
•Since 1750, the average amount of energy from the Sun either remained constant or decreased slightly.
•Climate models that include solar irradiance changes can't reproduce the observed temperature trend over the past century or more without including a rise in greenhouse gases.
> In IPCC language, "extremely likely" means 95-100% probability and "unequivocal" means no doubt — human influence has moved from theory to established fact. Natural climate variability exists, but it cannot account for the rapid warming, sea-level rise, ocean heating, and ice loss observed since the mid-20th century, which are consistent with the human-caused greenhouse effect.